diff --git a/include/xlnt/cell/cell.hpp b/include/xlnt/cell/cell.hpp
index 06db1193..0fa9c9a3 100644
--- a/include/xlnt/cell/cell.hpp
+++ b/include/xlnt/cell/cell.hpp
@@ -42,6 +42,7 @@ class cell_style;
 class comment;
 class fill;
 class font;
+class format;
 class number_format;
 class protection;
 class relationship;
@@ -53,9 +54,7 @@ struct datetime;
 struct time;
 struct timedelta;
 
-namespace detail {
-struct cell_impl;
-}
+namespace detail { struct cell_impl; }
 
 /// <summary>
 /// Describes cell associated properties.
@@ -191,21 +190,21 @@ public:
     // style
 
     /// <summary>
-    /// Return true if this cell has had a style applied to it.
+    /// Return true if this cell has had a format applied to it.
     /// </summary>
-    bool has_style() const;
+    bool has_format() const;
 
     /// <summary>
-    /// Return a reference to the style applied to this cell.
+    /// Return a reference to the format applied to this cell.
     /// </summary>
-    cell_style &get_style();
+    format &get_format();
 
     /// <summary>
-    /// Return a reference to the style applied to this cell.
+    /// Return a reference to the format applied to this cell.
     /// </summary>
-    const cell_style &get_style() const;
+    const format &get_format() const;
     
-    void set_style(const cell_style &style);
+    void set_format(const format &new_format);
 
     /// <summary>
     /// Return the number format of this cell.
@@ -384,7 +383,7 @@ public:
     friend XLNT_FUNCTION std::ostream &operator<<(std::ostream &stream, const xlnt::cell &cell);
 
 private:
-    std::size_t get_style_id() const;
+    std::size_t get_format_id() const;
     
     // make these friends so they can use the private constructor
     friend class style;
diff --git a/include/xlnt/serialization/style_serializer.hpp b/include/xlnt/serialization/style_serializer.hpp
index a98f6924..d99c6353 100644
--- a/include/xlnt/serialization/style_serializer.hpp
+++ b/include/xlnt/serialization/style_serializer.hpp
@@ -28,24 +28,24 @@
 #include <vector>
 
 #include <xlnt/xlnt_config.hpp>
-#include <xlnt/styles/named_style.hpp>
+#include <xlnt/styles/style.hpp>
 #include <xlnt/workbook/workbook.hpp>
 
 namespace xlnt {
 
 class alignment;
 class border;
-class cell_style;
 class color;
-class common_style;
 class conditional_format;
 class fill;
 class font;
 class format;
-class named_style;
+class formattable;
+class style;
 class number_format;
 class protection;
 class side;
+class style;
 class xml_document;
 class xml_node;
 
@@ -140,15 +140,15 @@ public:
     /// these is "applied". For example, a style with a defined font id, font=# but with
     /// "applyFont=0" will not use the font in formatting.
     /// </summary>
-    cell_style read_cell_style(const xml_node &style_node);
+    format read_format(const xml_node &format_node);
     
     /// <summary>
     /// Read a single named style from the given named_style_node. In styles.xml, this is a
     /// (confusingly named) "cellStyle" element. This node defines the name, whether it is
-    /// built-in and an xfId which is the index of an element in cellStyleXfs which should
-    /// be provided as the style_node parameter (cellStyleXfs itself, not the child xf node).
+    /// built-in and an xfId which is the index of an element in cellStyleXfs. style_format_node
+    /// should be the XML node of the element at the index of xfId.
     /// </summary>
-    named_style read_named_style(const xml_node &named_style_node, const xml_node &style_parent_node);
+    style read_style(const xml_node &style_node, const xml_node &style_format_node);
     
     //
     // Non-static element readers (i.e. readers that modify internal state)
@@ -184,13 +184,13 @@ public:
     /// Read all cell styles from cell_styles_node and add them to workbook.
     /// Return true on success.
     /// </summary>
-    bool read_cell_styles(const xml_node &cell_styles_node);
+    bool read_formats(const xml_node &formats_node);
 
     /// <summary>
     /// Read all named styles from named_style_node and cell_styles_node and add them to workbook.
     /// Return true on success.
     /// </summary>
-    bool read_named_styles(const xml_node &cell_styles_node, const xml_node &cell_style_formats_node);
+    bool read_styles(const xml_node &styles_node, const xml_node &style_formats_node);
 
     /// <summary>
     /// Read all borders from number_formats_node and add them to workbook.
@@ -232,27 +232,15 @@ public:
     /// </summary>
     bool write_number_formats(xml_node &number_formats_node) const;
 
-    bool write_style_common(const common_style &style, xml_node xf_node) const;
-
-    /// <summary>
-    /// Build an xml tree representing the given style into style_node.
-    /// Returns true on success.
-    /// </summary>
-    bool write_cell_style(const cell_style &style, xml_node &style_node) const;
+    bool write_formattable(const formattable &xf, xml_node xf_node) const;
     
     /// <summary>
     /// Build an xml tree representing the given style into style_node.
     /// Returns true on success.
     /// </summary>
-    bool write_cell_styles(xml_node &styles_node) const;
+    bool write_formats(xml_node &styles_node) const;
     
-    /// <summary>
-    /// Build an xml tree representing the given style into cell_styles_node and styles_node.
-    /// Returns true on success.
-    /// </summary>
-    bool write_named_style(const named_style &style, xml_node &cell_styles_node) const;
-    
-    bool write_named_styles(xml_node &cell_styles_node, xml_node &styles_node) const;
+    bool write_styles(xml_node &cell_styles_node, xml_node &cell_style_formats_node) const;
     
     bool write_colors(xml_node &colors_node) const;
     
@@ -281,8 +269,8 @@ private:
     std::vector<fill> fills_;
     std::vector<font> fonts_;
     std::vector<number_format> number_formats_;
-    std::vector<cell_style> cell_styles_;
-    std::unordered_map<std::size_t, named_style> named_styles_;
+    std::vector<format> formats_;
+    std::vector<style> styles_;
 };
 
 } // namespace xlnt
diff --git a/include/xlnt/styles/cell_style.hpp b/include/xlnt/styles/format.hpp
similarity index 76%
rename from include/xlnt/styles/cell_style.hpp
rename to include/xlnt/styles/format.hpp
index 9caef594..e03b031d 100644
--- a/include/xlnt/styles/cell_style.hpp
+++ b/include/xlnt/styles/format.hpp
@@ -23,28 +23,31 @@
 // @author: see AUTHORS file
 #pragma once
 
-#include <xlnt/styles/common_style.hpp>
+#include <xlnt/styles/formattable.hpp>
 
 namespace xlnt {
 
-class named_style;
+class style;
+namespace detail { struct workbook_impl; }
 
 /// <summary>
 /// Describes the formatting of a particular cell.
 /// </summary>
-class XLNT_CLASS cell_style : public common_style
+class XLNT_CLASS format : public formattable
 {
 public:
-    cell_style();
-    cell_style(const cell_style &other);
-    cell_style &operator=(const cell_style &other);
+    format();
+    format(const format &other);
+    format &operator=(const format &other);
     
     // Named Style
-    named_style &get_named_style();
-    const named_style &get_named_style() const;
-    void set_named_style(const std::string &style_name);
-    void set_named_style(const named_style &new_named_style);
-    void remove_named_style();
+    bool has_style() const;
+    std::string get_style_name() const;
+    style &get_style();
+    const style &get_style() const;
+    void set_style(const std::string &name);
+    void set_style(const style &new_style);
+    void remove_style();
     
 protected:
     std::string to_hash_string() const override;
diff --git a/include/xlnt/styles/common_style.hpp b/include/xlnt/styles/formattable.hpp
similarity index 94%
rename from include/xlnt/styles/common_style.hpp
rename to include/xlnt/styles/formattable.hpp
index 26837089..30c59454 100644
--- a/include/xlnt/styles/common_style.hpp
+++ b/include/xlnt/styles/formattable.hpp
@@ -34,17 +34,16 @@
 namespace xlnt {
 
 class cell;
-namespace detail { struct workbook_impl; }
 
 /// <summary>
 /// Describes the formatting of a particular cell.
 /// </summary>
-class XLNT_CLASS common_style : public hashable
+class XLNT_CLASS formattable : public hashable
 {
 public:
-    common_style();
-    common_style(const common_style &other);
-    common_style &operator=(const common_style &other);
+    formattable();
+    formattable(const formattable &other);
+    formattable &operator=(const formattable &other);
     
     void reset();
 
diff --git a/include/xlnt/styles/named_style.hpp b/include/xlnt/styles/style.hpp
similarity index 87%
rename from include/xlnt/styles/named_style.hpp
rename to include/xlnt/styles/style.hpp
index 7085e66b..c5968b29 100644
--- a/include/xlnt/styles/named_style.hpp
+++ b/include/xlnt/styles/style.hpp
@@ -23,7 +23,10 @@
 // @author: see AUTHORS file
 #pragma once
 
-#include <xlnt/styles/common_style.hpp>
+#include <cstdint>
+#include <string>
+
+#include <xlnt/styles/formattable.hpp>
 
 namespace xlnt {
 
@@ -31,14 +34,14 @@ class workbook;
 
 /// <summary>
 /// Describes a style which has a name and can be applied to multiple individual
-/// cell_styles.
+/// formats. In Excel this is a "Cell Style".
 /// </summary>
-class XLNT_CLASS named_style : public common_style
+class XLNT_CLASS style : public formattable
 {
 public:
-    named_style();
-    named_style(const named_style &other);
-    named_style &operator=(const named_style &other);
+    style();
+    style(const style &other);
+    style &operator=(const style &other);
 
     std::string get_name() const;
     void set_name(const std::string &name);
diff --git a/include/xlnt/workbook/workbook.hpp b/include/xlnt/workbook/workbook.hpp
index 07568d18..10b7429c 100644
--- a/include/xlnt/workbook/workbook.hpp
+++ b/include/xlnt/workbook/workbook.hpp
@@ -53,7 +53,7 @@ class protection;
 class range;
 class range_reference;
 class relationship;
-class named_style;
+class style;
 class theme;
 class worksheet;
 class worksheet_iterator;
@@ -183,19 +183,19 @@ public:
     bool has_loaded_theme() const;
     const theme &get_loaded_theme() const;
     
-    cell_style &get_style(std::size_t style_index);
-    const cell_style &get_style(std::size_t style_index) const;
-    std::size_t add_style(const cell_style &style);
-    void clear_styles();
-    std::vector<cell_style> &get_styles();
-    const std::vector<cell_style> &get_styles() const;
+    format &get_format(std::size_t format_index);
+    const format &get_format(std::size_t format_index) const;
+    std::size_t add_format(const format &new_format);
+    void clear_formats();
+    std::vector<format> &get_formats();
+    const std::vector<format> &get_formats() const;
     
     // Named Styles
-    bool has_named_style(const std::string &name);
-    named_style &get_named_style(const std::string &name);
-    const named_style &get_named_style(const std::string &name) const;
-    named_style &create_named_style(const std::string &name);
-    const std::vector<named_style> &get_named_styles() const;
+    bool has_style(const std::string &name);
+    style &get_style(const std::string &name);
+    const style &get_style(const std::string &name) const;
+    style &create_style(const std::string &name);
+    const std::vector<style> &get_styles() const;
 
     manifest &get_manifest();
     const manifest &get_manifest() const;
diff --git a/include/xlnt/xlnt.hpp b/include/xlnt/xlnt.hpp
index 19927d8e..6b3fb60b 100644
--- a/include/xlnt/xlnt.hpp
+++ b/include/xlnt/xlnt.hpp
@@ -34,10 +34,10 @@
 #include <xlnt/serialization/encoding.hpp>
 #include <xlnt/styles/alignment.hpp>
 #include <xlnt/styles/border.hpp>
-#include <xlnt/styles/cell_style.hpp>
 #include <xlnt/styles/color.hpp>
 #include <xlnt/styles/fill.hpp>
 #include <xlnt/styles/font.hpp>
+#include <xlnt/styles/format.hpp>
 #include <xlnt/styles/number_format.hpp>
 #include <xlnt/styles/protection.hpp>
 #include <xlnt/styles/side.hpp>
diff --git a/source/cell/cell.cpp b/source/cell/cell.cpp
index 2537bae5..c0369653 100644
--- a/source/cell/cell.cpp
+++ b/source/cell/cell.cpp
@@ -31,7 +31,7 @@
 #include <xlnt/packaging/document_properties.hpp>
 #include <xlnt/packaging/relationship.hpp>
 #include <xlnt/serialization/encoding.hpp>
-#include <xlnt/styles/cell_style.hpp>
+#include <xlnt/styles/format.hpp>
 #include <xlnt/styles/color.hpp>
 #include <xlnt/utils/date.hpp>
 #include <xlnt/utils/datetime.hpp>
@@ -223,7 +223,7 @@ cell::cell(worksheet worksheet, const cell_reference &reference, const T &initia
 
 bool cell::garbage_collectible() const
 {
-    return !(get_data_type() != type::null || is_merged() || has_comment() || has_formula() || has_style());
+    return !(get_data_type() != type::null || is_merged() || has_comment() || has_formula() || has_format());
 }
 
 template <>
@@ -389,7 +389,7 @@ XLNT_FUNCTION void cell::set_value(cell c)
     d_->hyperlink_ = c.d_->hyperlink_;
     d_->has_hyperlink_ = c.d_->has_hyperlink_;
     d_->formula_ = c.d_->formula_;
-    d_->style_id_ = c.d_->style_id_;
+    d_->format_id_ = c.d_->format_id_;
     set_comment(c.get_comment());
 }
 
@@ -691,73 +691,73 @@ void cell::set_data_type(type t)
 
 const number_format &cell::get_number_format() const
 {
-    if (d_->has_style_)
+    if (d_->has_format_)
     {
-        return get_workbook().get_style(d_->style_id_).get_number_format();
+        return get_workbook().get_format(d_->format_id_).get_number_format();
     }
     else
     {
-        return get_workbook().get_style(0).get_number_format();
+        return get_workbook().get_format(0).get_number_format();
     }
 }
 
 const font &cell::get_font() const
 {
-    if (d_->has_style_)
+    if (d_->has_format_)
     {
-        return get_workbook().get_style(d_->style_id_).get_font();
+        return get_workbook().get_format(d_->format_id_).get_font();
     }
     else
     {
-        return get_workbook().get_style(0).get_font();
+        return get_workbook().get_format(0).get_font();
     }
 }
 
 const fill &cell::get_fill() const
 {
-    if (d_->has_style_)
+    if (d_->has_format_)
     {
-        return get_workbook().get_style(d_->style_id_).get_fill();
+        return get_workbook().get_format(d_->format_id_).get_fill();
     }
     else
     {
-        return get_workbook().get_style(0).get_fill();
+        return get_workbook().get_format(0).get_fill();
     }
 }
 
 const border &cell::get_border() const
 {
-    if (d_->has_style_)
+    if (d_->has_format_)
     {
-        return get_workbook().get_style(d_->style_id_).get_border();
+        return get_workbook().get_format(d_->format_id_).get_border();
     }
     else
     {
-        return get_workbook().get_style(0).get_border();
+        return get_workbook().get_format(0).get_border();
     }
 }
 
 const alignment &cell::get_alignment() const
 {
-    if (d_->has_style_)
+    if (d_->has_format_)
     {
-        return get_workbook().get_style(d_->style_id_).get_alignment();
+        return get_workbook().get_format(d_->format_id_).get_alignment();
     }
     else
     {
-        return get_workbook().get_style(0).get_alignment();
+        return get_workbook().get_format(0).get_alignment();
     }
 }
 
 const protection &cell::get_protection() const
 {
-    if (d_->has_style_)
+    if (d_->has_format_)
     {
-        return get_workbook().get_style(d_->style_id_).get_protection();
+        return get_workbook().get_format(d_->format_id_).get_protection();
     }
     else
     {
-        return get_workbook().get_style(0).get_protection();
+        return get_workbook().get_format(0).get_protection();
     }
 }
 
@@ -875,50 +875,50 @@ XLNT_FUNCTION timedelta cell::get_value() const
 
 void cell::set_border(const xlnt::border &border_)
 {
-    d_->has_style_ = true;
-    auto style_copy = get_workbook().get_style(d_->style_id_);
-    style_copy.set_border(border_);
-    d_->style_id_ = get_workbook().add_style(style_copy);
+    d_->has_format_ = true;
+    auto format_copy = get_workbook().get_format(d_->format_id_);
+    format_copy.set_border(border_);
+    d_->format_id_ = get_workbook().add_format(format_copy);
 }
 
 void cell::set_fill(const xlnt::fill &fill_)
 {
-    d_->has_style_ = true;
-    auto style_copy = get_workbook().get_style(d_->style_id_);
-    style_copy.set_fill(fill_);
-    d_->style_id_ = get_workbook().add_style(style_copy);
+    d_->has_format_ = true;
+    auto format_copy = get_workbook().get_format(d_->format_id_);
+    format_copy.set_fill(fill_);
+    d_->format_id_ = get_workbook().add_format(format_copy);
 }
 
 void cell::set_font(const font &font_)
 {
-    d_->has_style_ = true;
-    auto style_copy = get_workbook().get_style(d_->style_id_);
-    style_copy.set_font(font_);
-    d_->style_id_ = get_workbook().add_style(style_copy);
+    d_->has_format_ = true;
+    auto format_copy = get_workbook().get_format(d_->format_id_);
+    format_copy.set_font(font_);
+    d_->format_id_ = get_workbook().add_format(format_copy);
 }
 
 void cell::set_number_format(const number_format &number_format_)
 {
-    d_->has_style_ = true;
-    auto style_copy = get_workbook().get_style(d_->style_id_);
-    style_copy.set_number_format(number_format_);
-    d_->style_id_ = get_workbook().add_style(style_copy);
+    d_->has_format_ = true;
+    auto format_copy = get_workbook().get_format(d_->format_id_);
+    format_copy.set_number_format(number_format_);
+    d_->format_id_ = get_workbook().add_format(format_copy);
 }
 
 void cell::set_alignment(const xlnt::alignment &alignment_)
 {
-    d_->has_style_ = true;
-    auto style_copy = get_workbook().get_style(d_->style_id_);
-    style_copy.set_alignment(alignment_);
-    d_->style_id_ = get_workbook().add_style(style_copy);
+    d_->has_format_ = true;
+    auto format_copy = get_workbook().get_format(d_->format_id_);
+    format_copy.set_alignment(alignment_);
+    d_->format_id_ = get_workbook().add_format(format_copy);
 }
 
 void cell::set_protection(const xlnt::protection &protection_)
 {
-    d_->has_style_ = true;
-    auto style_copy = get_workbook().get_style(d_->style_id_);
-    style_copy.set_protection(protection_);
-    d_->style_id_ = get_workbook().add_style(style_copy);
+    d_->has_format_ = true;
+    auto format_copy = get_workbook().get_format(d_->format_id_);
+    format_copy.set_protection(protection_);
+    d_->format_id_ = get_workbook().add_format(format_copy);
 }
 
 template <>
@@ -953,20 +953,20 @@ std::string cell::to_string() const
     }
 }
 
-cell_style &cell::get_style()
+format &cell::get_format()
 {
-    return get_workbook().get_style(d_->style_id_);
+    return get_workbook().get_format(d_->format_id_);
 }
 
-bool cell::has_style() const
+bool cell::has_format() const
 {
-    return d_->has_style_;
+    return d_->has_format_;
 }
 
-void cell::set_style(const cell_style &style)
+void cell::set_format(const format &new_format)
 {
-    d_->style_id_ = get_workbook().add_style(style);
-    d_->has_style_ = true;
+    d_->format_id_ = get_workbook().add_format(new_format);
+    d_->has_format_ = true;
 }
 
 calendar cell::get_base_date() const
@@ -979,9 +979,9 @@ std::ostream &operator<<(std::ostream &stream, const xlnt::cell &cell)
     return stream << cell.to_string();
 }
 
-std::size_t cell::get_style_id() const
+std::size_t cell::get_format_id() const
 {
-    return d_->style_id_;
+    return d_->format_id_;
 }
 
 void cell::guess_type_and_set_value(const std::string &value)
diff --git a/source/cell/tests/test_cell.hpp b/source/cell/tests/test_cell.hpp
index a63cf1ab..930ce7a4 100644
--- a/source/cell/tests/test_cell.hpp
+++ b/source/cell/tests/test_cell.hpp
@@ -10,9 +10,9 @@
 #include <xlnt/serialization/encoding.hpp>
 #include <xlnt/styles/alignment.hpp>
 #include <xlnt/styles/border.hpp>
-#include <xlnt/styles/cell_style.hpp>
 #include <xlnt/styles/font.hpp>
 #include <xlnt/styles/fill.hpp>
+#include <xlnt/styles/format.hpp>
 #include <xlnt/styles/number_format.hpp>
 #include <xlnt/styles/protection.hpp>
 #include <xlnt/utils/date.hpp>
@@ -367,8 +367,8 @@ public:
         
         cell.set_font(font);
         
-        TS_ASSERT(cell.has_style());
-        TS_ASSERT(cell.get_style().font_applied());
+        TS_ASSERT(cell.has_format());
+        TS_ASSERT(cell.get_format().font_applied());
         TS_ASSERT_EQUALS(cell.get_font(), font);
     }
     
@@ -383,8 +383,8 @@ public:
         
         cell.set_fill(f);
         
-        TS_ASSERT(cell.has_style());
-        TS_ASSERT(cell.get_style().fill_applied());
+        TS_ASSERT(cell.has_format());
+        TS_ASSERT(cell.get_format().fill_applied());
         TS_ASSERT_EQUALS(cell.get_fill(), f);
     }
     
@@ -397,8 +397,8 @@ public:
 
         cell.set_border(border);
         
-        TS_ASSERT(cell.has_style());
-        TS_ASSERT(cell.get_style().border_applied());
+        TS_ASSERT(cell.has_format());
+        TS_ASSERT(cell.get_format().border_applied());
         TS_ASSERT_EQUALS(cell.get_border(), border);
     }
     
@@ -410,8 +410,8 @@ public:
         xlnt::number_format format("dd--hh--mm");
         cell.set_number_format(format);
         
-        TS_ASSERT(cell.has_style());
-        TS_ASSERT(cell.get_style().number_format_applied());
+        TS_ASSERT(cell.has_format());
+        TS_ASSERT(cell.get_format().number_format_applied());
         TS_ASSERT_EQUALS(cell.get_number_format().get_format_string(), "dd--hh--mm");
     }
     
@@ -425,8 +425,8 @@ public:
     
         cell.set_alignment(align);
         
-        TS_ASSERT(cell.has_style());
-        TS_ASSERT(cell.get_style().alignment_applied());
+        TS_ASSERT(cell.has_format());
+        TS_ASSERT(cell.get_format().alignment_applied());
         TS_ASSERT_EQUALS(cell.get_alignment(), align);
     }
     
@@ -440,8 +440,8 @@ public:
 
         cell.set_protection(prot);
         
-        TS_ASSERT(cell.has_style());
-        TS_ASSERT(cell.get_style().protection_applied());
+        TS_ASSERT(cell.has_format());
+        TS_ASSERT(cell.get_format().protection_applied());
         TS_ASSERT_EQUALS(cell.get_protection(), prot);
     }
 };
diff --git a/source/detail/cell_impl.cpp b/source/detail/cell_impl.cpp
index 34a0d78d..f03a858f 100644
--- a/source/detail/cell_impl.cpp
+++ b/source/detail/cell_impl.cpp
@@ -45,8 +45,8 @@ cell_impl::cell_impl(worksheet_impl *parent, column_t column, row_t row)
       value_numeric_(0),
       has_hyperlink_(false),
       is_merged_(false),
-      has_style_(false),
-      style_id_(0),
+      has_format_(false),
+      format_id_(0),
       comment_(nullptr)
 {
 }
@@ -68,8 +68,8 @@ cell_impl &cell_impl::operator=(const cell_impl &rhs)
     is_merged_ = rhs.is_merged_;
     has_hyperlink_ = rhs.has_hyperlink_;
     type_ = rhs.type_;
-    style_id_ = rhs.style_id_;
-    has_style_ = rhs.has_style_;
+    format_id_ = rhs.format_id_;
+    has_format_ = rhs.has_format_;
 
     if (rhs.comment_ != nullptr)
     {
diff --git a/source/detail/cell_impl.hpp b/source/detail/cell_impl.hpp
index c896e7cd..8b5682d9 100644
--- a/source/detail/cell_impl.hpp
+++ b/source/detail/cell_impl.hpp
@@ -70,13 +70,10 @@ struct cell_impl
 
     bool is_merged_;
 
-    bool has_style_;
-    std::size_t style_id_;
+    bool has_format_;
+    std::size_t format_id_;
 
     std::unique_ptr<comment_impl> comment_;
-    
-    bool pivot_button_;
-    bool quote_prefix_;
 };
 
 } // namespace detail
diff --git a/source/detail/workbook_impl.hpp b/source/detail/workbook_impl.hpp
index 1d5c1ae0..4f481f35 100644
--- a/source/detail/workbook_impl.hpp
+++ b/source/detail/workbook_impl.hpp
@@ -43,8 +43,8 @@ struct workbook_impl
           guess_types_(other.guess_types_),
           data_only_(other.data_only_),
           read_only_(other.read_only_),
-          cell_styles_(other.cell_styles_),
-          named_styles_(other.named_styles_),
+          formats_(other.formats_),
+          styles_(other.styles_),
           manifest_(other.manifest_)
     {
     }
@@ -84,8 +84,8 @@ struct workbook_impl
     bool data_only_;
     bool read_only_;
 
-    std::vector<cell_style> cell_styles_;
-    std::vector<named_style> named_styles_;
+    std::vector<format> formats_;
+    std::vector<style> styles_;
     std::size_t next_custom_format_id_;
     
     manifest manifest_;
diff --git a/source/serialization/excel_serializer.cpp b/source/serialization/excel_serializer.cpp
index 67ce8e97..b9ee7b76 100644
--- a/source/serialization/excel_serializer.cpp
+++ b/source/serialization/excel_serializer.cpp
@@ -37,8 +37,8 @@
 #include <xlnt/serialization/xml_serializer.hpp>
 #include <xlnt/packaging/document_properties.hpp>
 #include <xlnt/packaging/manifest.hpp>
-#include <xlnt/styles/cell_style.hpp>
-#include <xlnt/styles/named_style.hpp>
+#include <xlnt/styles/format.hpp>
+#include <xlnt/styles/style.hpp>
 #include <xlnt/utils/exceptions.hpp>
 #include <xlnt/workbook/workbook.hpp>
 #include <xlnt/workbook/worksheet_iterator.hpp>
diff --git a/source/serialization/style_serializer.cpp b/source/serialization/style_serializer.cpp
index 197e722c..3189eb7a 100644
--- a/source/serialization/style_serializer.cpp
+++ b/source/serialization/style_serializer.cpp
@@ -30,11 +30,10 @@
 #include <xlnt/serialization/xml_node.hpp>
 #include <xlnt/styles/alignment.hpp>
 #include <xlnt/styles/border.hpp>
-#include <xlnt/styles/cell_style.hpp>
-#include <xlnt/styles/common_style.hpp>
 #include <xlnt/styles/fill.hpp>
 #include <xlnt/styles/font.hpp>
-#include <xlnt/styles/named_style.hpp>
+#include <xlnt/styles/format.hpp>
+#include <xlnt/styles/style.hpp>
 #include <xlnt/styles/number_format.hpp>
 #include <xlnt/styles/protection.hpp>
 #include <xlnt/workbook/worksheet_iterator.hpp>
@@ -197,7 +196,7 @@ style_serializer::style_serializer(workbook &wb) : workbook_(wb)
         {
             for (auto cell : row)
             {
-                if (cell.has_style())
+                if (cell.has_format())
                 {
                     number_format_set.insert(cell.get_number_format());
                 }
@@ -295,36 +294,36 @@ alignment style_serializer::read_alignment(const xml_node &alignment_node)
     return align;
 }
 
-cell_style style_serializer::read_cell_style(const xml_node &style_node)
+format style_serializer::read_format(const xml_node &format_node)
 {
-    cell_style s;
+    format f;
     
     // Alignment
-    s.alignment_applied(style_node.has_child("alignment") || is_true(style_node.get_attribute("applyAlignment")));
+    f.alignment_applied(format_node.has_child("alignment") || is_true(format_node.get_attribute("applyAlignment")));
 
-    if (s.alignment_applied())
+    if (f.alignment_applied())
     {
-        auto inline_alignment = read_alignment(style_node.get_child("alignment"));
-        s.set_alignment(inline_alignment);
+        auto inline_alignment = read_alignment(format_node.get_child("alignment"));
+        f.set_alignment(inline_alignment);
     }
     
     // Border
-    auto border_index = style_node.has_attribute("borderId") ? std::stoull(style_node.get_attribute("borderId")) : 0;
-    s.set_border(borders_.at(border_index));
-    s.border_applied(is_true(style_node.get_attribute("applyBorder")));
+    auto border_index = format_node.has_attribute("borderId") ? std::stoull(format_node.get_attribute("borderId")) : 0;
+    f.set_border(borders_.at(border_index));
+    f.border_applied(is_true(format_node.get_attribute("applyBorder")));
     
     // Fill
-    auto fill_index = style_node.has_attribute("fillId") ? std::stoull(style_node.get_attribute("fillId")) : 0;
-    s.set_fill(fills_.at(fill_index));
-    s.fill_applied(is_true(style_node.get_attribute("applyFill")));
+    auto fill_index = format_node.has_attribute("fillId") ? std::stoull(format_node.get_attribute("fillId")) : 0;
+    f.set_fill(fills_.at(fill_index));
+    f.fill_applied(is_true(format_node.get_attribute("applyFill")));
     
     // Font
-    auto font_index = style_node.has_attribute("fontId") ? std::stoull(style_node.get_attribute("fontId")) : 0;
-    s.set_font(fonts_.at(font_index));
-    s.font_applied(is_true(style_node.get_attribute("applyFont")));
+    auto font_index = format_node.has_attribute("fontId") ? std::stoull(format_node.get_attribute("fontId")) : 0;
+    f.set_font(fonts_.at(font_index));
+    f.font_applied(is_true(format_node.get_attribute("applyFont")));
 
     // Number Format
-    auto number_format_id = std::stoull(style_node.get_attribute("numFmtId"));
+    auto number_format_id = std::stoull(format_node.get_attribute("numFmtId"));
 
     bool builtin_format = true;
 
@@ -332,7 +331,7 @@ cell_style style_serializer::read_cell_style(const xml_node &style_node)
     {
         if (static_cast<std::size_t>(num_fmt.get_id()) == number_format_id)
         {
-            s.set_number_format(num_fmt);
+            f.set_number_format(num_fmt);
             builtin_format = false;
             break;
         }
@@ -340,32 +339,32 @@ cell_style style_serializer::read_cell_style(const xml_node &style_node)
 
     if (builtin_format)
     {
-        s.set_number_format(number_format::from_builtin_id(number_format_id));
+        f.set_number_format(number_format::from_builtin_id(number_format_id));
     }
     
-    s.number_format_applied(is_true(style_node.get_attribute("applyNumberFormat")));
+    f.number_format_applied(is_true(format_node.get_attribute("applyNumberFormat")));
 
     // Protection
-    s.protection_applied(style_node.has_attribute("protection") || is_true(style_node.get_attribute("applyProtection")));
+    f.protection_applied(format_node.has_attribute("protection") || is_true(format_node.get_attribute("applyProtection")));
 
-    if (s.protection_applied())
+    if (f.protection_applied())
     {
-        auto inline_protection = read_protection(style_node.get_child("protection"));
-        s.set_protection(inline_protection);
+        auto inline_protection = read_protection(format_node.get_child("protection"));
+        f.set_protection(inline_protection);
     }
 
-    return s;
+    return f;
 }
 
-named_style style_serializer::read_named_style(const xml_node &cell_style_node, const xml_node &cell_style_format_node)
+style style_serializer::read_style(const xml_node &style_node, const xml_node &style_format_node)
 {
-    named_style s;
+    style s;
 
-    s.set_name(cell_style_node.get_attribute("name"));
-    s.set_hidden(cell_style_node.has_attribute("hidden") && is_true(cell_style_node.get_attribute("hidden")));
-    s.set_builtin_id(std::stoull(cell_style_node.get_attribute("builtinId")));
+    s.set_name(style_node.get_attribute("name"));
+    s.set_hidden(style_node.has_attribute("hidden") && is_true(style_node.get_attribute("hidden")));
+    s.set_builtin_id(std::stoull(style_node.get_attribute("builtinId")));
     
-    auto base_style = read_cell_style(cell_style_format_node);
+    auto base_style = read_format(style_format_node);
     
     //TODO shouldn't have to set apply after set_X()
     s.set_alignment(base_style.get_alignment());
@@ -393,81 +392,86 @@ bool style_serializer::read_stylesheet(const xml_document &xml)
     read_fonts(stylesheet_node.get_child("fonts"));
     read_number_formats(stylesheet_node.get_child("numFmts"));
     read_colors(stylesheet_node.get_child("colors"));
-    read_named_styles(stylesheet_node.get_child("cellStyles"), stylesheet_node.get_child("cellStyleXfs"));
-    read_cell_styles(stylesheet_node.get_child("cellXfs"));
+    read_styles(stylesheet_node.get_child("cellStyles"), stylesheet_node.get_child("cellStyleXfs"));
+    read_formats(stylesheet_node.get_child("cellXfs"));
 
-    for (const auto &ns : named_styles_)
+    for (const auto &ns : styles_)
     {
-        workbook_.create_named_style(ns.second.get_name()) = ns.second;
+        workbook_.create_style(ns.get_name()) = ns;
     }
     
-    if (!cell_styles_.empty())
+    if (!formats_.empty())
     {
-        workbook_.clear_styles();
+        workbook_.clear_formats();
     }
     
-    for (const auto &s : cell_styles_)
+    for (const auto &s : formats_)
     {
-        workbook_.add_style(s);
+        workbook_.add_format(s);
     }
 
     return true;
 }
 
-bool style_serializer::read_cell_styles(const xlnt::xml_node &cell_styles_node)
+bool style_serializer::read_formats(const xlnt::xml_node &formats_node)
 {
-    for (auto style_node : cell_styles_node.get_children())
+    for (auto format_node : formats_node.get_children())
     {
-        if (style_node.get_name() != "xf")
+        if (format_node.get_name() != "xf")
         {
             continue;
         }
 
-        auto style = read_cell_style(style_node);
+        auto cell_format = read_format(format_node);
         
-        if(style_node.has_attribute("xfId"))
+        // TODO do all formats have xfId?
+        if(format_node.has_attribute("xfId"))
         {
-            auto named_style_index = std::stoull(style_node.get_attribute("xfId"));
-            auto named_style = named_styles_.at(named_style_index);
+            auto style_index = std::stoull(format_node.get_attribute("xfId"));
+            auto cell_style = styles_.at(style_index);
             
-            style.set_named_style(named_style.get_name());
+            cell_format.set_style(cell_style.get_name());
         }
         
-        cell_styles_.push_back(style);
+        formats_.push_back(cell_format);
     }
     
     return true;
 }
 
-bool style_serializer::read_named_styles(const xlnt::xml_node &cell_styles_node, const xlnt::xml_node &cell_style_formats_node)
+bool style_serializer::read_styles(const xlnt::xml_node &styles_node, const xlnt::xml_node &style_formats_node)
 {
     std::size_t style_index = 0;
     
-    for (auto cell_style_format_node : cell_style_formats_node.get_children())
+    for (auto cell_style_format_node : style_formats_node.get_children())
     {
-        for (auto cell_style_node : cell_styles_node.get_children())
+        bool match = false;
+        style ns;
+        
+        for (auto cell_style_node : styles_node.get_children())
         {
             auto cell_style_format_index = std::stoull(cell_style_node.get_attribute("xfId"));
             
             if (cell_style_format_index == style_index)
             {
-                auto ns = read_named_style(cell_style_node, cell_style_format_node);
-                named_styles_[style_index] = ns;
+                ns = read_style(cell_style_node, cell_style_format_node);
+                match = true;
                 
                 break;
             }
         }
         
+        styles_.push_back(ns);
         style_index++;
     }
     
-    if (named_styles_.empty())
+    if (styles_.empty())
     {
-        named_style ns;
+        style ns;
         ns.set_name("Standard");
         ns.set_hidden(false);
         ns.set_builtin_id(0);
-        named_styles_[0] = ns;
+        styles_.push_back(ns);
     }
     
     return true;
@@ -762,7 +766,7 @@ void style_serializer::initialize_vectors()
         {
             for (auto cell : row)
             {
-                if (cell.has_style())
+                if (cell.has_format())
                 {
                     any_style = true;
                 }
@@ -772,7 +776,7 @@ void style_serializer::initialize_vectors()
     
     if (any_style)
     {
-        cell_styles_.assign(workbook_.get_styles().begin(), workbook_.get_styles().end());
+        formats_.assign(workbook_.get_formats().begin(), workbook_.get_formats().end());
     }
     
     colors_.clear();
@@ -781,26 +785,26 @@ void style_serializer::initialize_vectors()
     fonts_.clear();
     number_formats_.clear();
     
-    for (auto &style : cell_styles_)
+    for (auto &current_format : formats_)
     {
-        if (std::find(borders_.begin(), borders_.end(), style.get_border()) == borders_.end())
+        if (std::find(borders_.begin(), borders_.end(), current_format.get_border()) == borders_.end())
         {
-            borders_.push_back(style.get_border());
+            borders_.push_back(current_format.get_border());
         }
         
-        if (std::find(fills_.begin(), fills_.end(), style.get_fill()) == fills_.end())
+        if (std::find(fills_.begin(), fills_.end(), current_format.get_fill()) == fills_.end())
         {
-            fills_.push_back(style.get_fill());
+            fills_.push_back(current_format.get_fill());
         }
         
-        if (std::find(fonts_.begin(), fonts_.end(), style.get_font()) == fonts_.end())
+        if (std::find(fonts_.begin(), fonts_.end(), current_format.get_font()) == fonts_.end())
         {
-            fonts_.push_back(style.get_font());
+            fonts_.push_back(current_format.get_font());
         }
         
-        if (std::find(number_formats_.begin(), number_formats_.end(), style.get_number_format()) == number_formats_.end())
+        if (std::find(number_formats_.begin(), number_formats_.end(), current_format.get_number_format()) == number_formats_.end())
         {
-            number_formats_.push_back(style.get_number_format());
+            number_formats_.push_back(current_format.get_number_format());
         }
     }
     
@@ -1104,39 +1108,39 @@ bool style_serializer::write_borders(xlnt::xml_node &borders_node) const
     return true;
 }
 
-bool style_serializer::write_style_common(const common_style &style, xml_node xf_node) const
+bool style_serializer::write_formattable(const formattable &xf, xml_node xf_node) const
 {
-    xf_node.add_attribute("numFmtId", std::to_string(style.get_number_format().get_id()));
+    xf_node.add_attribute("numFmtId", std::to_string(xf.get_number_format().get_id()));
      
-    auto font_id = std::distance(fonts_.begin(), std::find(fonts_.begin(), fonts_.end(), style.get_font()));
+    auto font_id = std::distance(fonts_.begin(), std::find(fonts_.begin(), fonts_.end(), xf.get_font()));
     xf_node.add_attribute("fontId", std::to_string(font_id));
 
-    if (style.fill_applied())
+    if (xf.fill_applied())
     {
-        auto fill_id = std::distance(fills_.begin(), std::find(fills_.begin(), fills_.end(), style.get_fill()));
+        auto fill_id = std::distance(fills_.begin(), std::find(fills_.begin(), fills_.end(), xf.get_fill()));
         xf_node.add_attribute("fillId", std::to_string(fill_id));
     }
 
-    if (style.border_applied())
+    if (xf.border_applied())
     {
-        auto border_id = std::distance(borders_.begin(), std::find(borders_.begin(), borders_.end(), style.get_border()));
+        auto border_id = std::distance(borders_.begin(), std::find(borders_.begin(), borders_.end(), xf.get_border()));
         xf_node.add_attribute("borderId", std::to_string(border_id));
     }
 
-    xf_node.add_attribute("applyNumberFormat", style.number_format_applied() ? "1" : "0");
-    xf_node.add_attribute("applyFill", style.fill_applied() ? "1" : "0");
-    xf_node.add_attribute("applyFont", style.font_applied() ? "1" : "0");
-    xf_node.add_attribute("applyBorder", style.border_applied() ? "1" : "0");
-    xf_node.add_attribute("applyAlignment", style.alignment_applied() ? "1" : "0");
-    xf_node.add_attribute("applyProtection", style.protection_applied() ? "1" : "0");
+    xf_node.add_attribute("applyNumberFormat", xf.number_format_applied() ? "1" : "0");
+    xf_node.add_attribute("applyFill", xf.fill_applied() ? "1" : "0");
+    xf_node.add_attribute("applyFont", xf.font_applied() ? "1" : "0");
+    xf_node.add_attribute("applyBorder", xf.border_applied() ? "1" : "0");
+    xf_node.add_attribute("applyAlignment", xf.alignment_applied() ? "1" : "0");
+    xf_node.add_attribute("applyProtection", xf.protection_applied() ? "1" : "0");
 
-    if (style.alignment_applied())
+    if (xf.alignment_applied())
     {
         auto alignment_node = xf_node.add_child("alignment");
 
-        if (style.get_alignment().has_vertical())
+        if (xf.get_alignment().has_vertical())
         {
-            switch (style.get_alignment().get_vertical())
+            switch (xf.get_alignment().get_vertical())
             {
             case vertical_alignment::bottom:
                 alignment_node.add_attribute("vertical", "bottom");
@@ -1155,9 +1159,9 @@ bool style_serializer::write_style_common(const common_style &style, xml_node xf
             }
         }
 
-        if (style.get_alignment().has_horizontal())
+        if (xf.get_alignment().has_horizontal())
         {
-            switch (style.get_alignment().get_horizontal())
+            switch (xf.get_alignment().get_horizontal())
             {
             case horizontal_alignment::center:
                 alignment_node.add_attribute("horizontal", "center");
@@ -1182,12 +1186,12 @@ bool style_serializer::write_style_common(const common_style &style, xml_node xf
             }
         }
 
-        if (style.get_alignment().get_wrap_text())
+        if (xf.get_alignment().get_wrap_text())
         {
             alignment_node.add_attribute("wrapText", "1");
         }
         
-        if (style.get_alignment().get_shrink_to_fit())
+        if (xf.get_alignment().get_shrink_to_fit())
         {
             alignment_node.add_attribute("shrinkToFit", "1");
         }
@@ -1196,37 +1200,24 @@ bool style_serializer::write_style_common(const common_style &style, xml_node xf
     return true;
 }
 
-bool style_serializer::write_cell_style(const cell_style &style, xml_node &xf_node) const
+bool style_serializer::write_styles(xml_node &styles_node, xml_node &style_formats_node) const
 {
-    return write_style_common(style, xf_node);
-}
+    style_formats_node.add_attribute("count", std::to_string(styles_.size()));
+    styles_node.add_attribute("count", std::to_string(styles_.size()));
+    std::size_t style_index = 0;
 
-bool style_serializer::write_named_style(const named_style &style, xml_node &xf_node) const
-{
-    return write_style_common(style, xf_node);
-}
-
-bool style_serializer::write_named_styles(xml_node &cell_styles_node, xml_node &styles_node) const
-{
-    styles_node.add_attribute("count", std::to_string(named_styles_.size()));
-
-    for(auto &key_style : named_styles_)
+    for(auto &current_style : styles_)
     {
-        auto xf_node = styles_node.add_child("xf");
-        write_named_style(key_style.second, xf_node);
-    }
-    
-    cell_styles_node.add_attribute("count", std::to_string(named_styles_.size()));
+        auto xf_node = style_formats_node.add_child("xf");
+        write_formattable(current_style, xf_node);
 
-    for(auto &key_style : named_styles_)
-    {
-        auto cell_style_node = cell_styles_node.add_child("cellStyle");
+        auto cell_style_node = styles_node.add_child("cellStyle");
         
-        cell_style_node.add_attribute("name", key_style.second.get_name());
-        cell_style_node.add_attribute("xfId", std::to_string(key_style.first));
-        cell_style_node.add_attribute("builtinId", std::to_string(key_style.second.get_builtin_id()));
+        cell_style_node.add_attribute("name", current_style.get_name());
+        cell_style_node.add_attribute("xfId", std::to_string(style_index++));
+        cell_style_node.add_attribute("builtinId", std::to_string(current_style.get_builtin_id()));
         
-        if (key_style.second.get_hidden())
+        if (current_style.get_hidden())
         {
             cell_style_node.add_attribute("hidden", "1");
         }
@@ -1235,15 +1226,19 @@ bool style_serializer::write_named_styles(xml_node &cell_styles_node, xml_node &
     return true;
 }
 
-bool style_serializer::write_cell_styles(xml_node &cell_styles_node) const
+bool style_serializer::write_formats(xml_node &formats_node) const
 {
-    cell_styles_node.add_attribute("count", std::to_string(cell_styles_.size()));
+    formats_node.add_attribute("count", std::to_string(formats_.size()));
 
-    for(auto &style : cell_styles_)
+    for(auto &current_format : formats_)
     {
-        auto xf_node = cell_styles_node.add_child("xf");
-        write_cell_style(style, xf_node);
-        xf_node.add_attribute("xfId", "0"); //TODO point to named style here
+        auto xf_node = formats_node.add_child("xf");
+        write_formattable(current_format, xf_node);
+        
+        if(current_format.has_style())
+        {
+            xf_node.add_attribute("xfId", "0");
+        }
     }
 
     return true;
@@ -1312,10 +1307,10 @@ xml_document style_serializer::write_stylesheet()
     auto cell_style_xfs_node = root_node.add_child("cellStyleXfs");
 
     auto cell_xfs_node = root_node.add_child("cellXfs");
-    write_cell_styles(cell_xfs_node);
+    write_formats(cell_xfs_node);
     
     auto cell_styles_node = root_node.add_child("cellStyles");
-    write_named_styles(cell_style_xfs_node, cell_styles_node);
+    write_styles(cell_styles_node, cell_style_xfs_node);
     
     auto dxfs_node = root_node.add_child("dxfs");
     write_dxfs(dxfs_node);
diff --git a/source/serialization/worksheet_serializer.cpp b/source/serialization/worksheet_serializer.cpp
index 77d117cc..69bdaedd 100644
--- a/source/serialization/worksheet_serializer.cpp
+++ b/source/serialization/worksheet_serializer.cpp
@@ -149,8 +149,8 @@ bool worksheet_serializer::read_worksheet(const xml_document &xml)
                 bool has_type = cell_node.has_attribute("t");
                 std::string type = has_type ? cell_node.get_attribute("t") : "";
 
-                bool has_style = cell_node.has_attribute("s");
-                auto style_id = static_cast<std::size_t>(has_style ? std::stoull(cell_node.get_attribute("s")) : 0LL);
+                bool has_format = cell_node.has_attribute("s");
+                auto format_id = static_cast<std::size_t>(has_format ? std::stoull(cell_node.get_attribute("s")) : 0LL);
 
                 bool has_formula = cell_node.has_child("f");
                 bool has_shared_formula = has_formula && cell_node.get_child("f").has_attribute("t") &&
@@ -195,9 +195,9 @@ bool worksheet_serializer::read_worksheet(const xml_document &xml)
                     }
                 }
 
-                if (has_style)
+                if (has_format)
                 {
-                    cell.set_style(sheet_.get_workbook().get_style(style_id));
+                    cell.set_format(sheet_.get_workbook().get_format(format_id));
                 }
             }
         }
@@ -509,9 +509,9 @@ xml_document worksheet_serializer::write_worksheet() const
                     }
                 }
 
-                if (cell.has_style())
+                if (cell.has_format())
                 {
-                    cell_node.add_attribute("s", std::to_string(cell.get_style_id()));
+                    cell_node.add_attribute("s", std::to_string(cell.get_format_id()));
                 }
             }
         }
diff --git a/source/styles/common_style.cpp b/source/styles/common_style.cpp
index 8b9d36d3..fde05a49 100644
--- a/source/styles/common_style.cpp
+++ b/source/styles/common_style.cpp
@@ -21,11 +21,11 @@
 //
 // @license: http://www.opensource.org/licenses/mit-license.php
 // @author: see AUTHORS file
-#include <xlnt/styles/common_style.hpp>
+#include <xlnt/styles/formattable.hpp>
 
 namespace xlnt {
 
-common_style::common_style()
+formattable::formattable()
     : apply_alignment_(false),
       apply_border_(false),
       apply_fill_(false),
@@ -35,7 +35,7 @@ common_style::common_style()
 {
 }
 
-common_style::common_style(const common_style &other)
+formattable::formattable(const formattable &other)
     : alignment_(other.alignment_),
       border_(other.border_),
       fill_(other.fill_),
@@ -51,7 +51,7 @@ common_style::common_style(const common_style &other)
 {
 }
 
-common_style &common_style::operator=(const xlnt::common_style &other)
+formattable &formattable::operator=(const xlnt::formattable &other)
 {
     alignment_ = other.alignment_;
     border_ = other.border_;
@@ -70,105 +70,105 @@ common_style &common_style::operator=(const xlnt::common_style &other)
     return *this;
 }
 
-alignment &common_style::get_alignment()
+alignment &formattable::get_alignment()
 {
     return alignment_;
 }
 
-const alignment &common_style::get_alignment() const
+const alignment &formattable::get_alignment() const
 {
     return alignment_;
 }
 
-void common_style::set_alignment(const xlnt::alignment &new_alignment)
+void formattable::set_alignment(const xlnt::alignment &new_alignment)
 {
     alignment_ = new_alignment;
     alignment_applied(true);
 }
 
-number_format &common_style::get_number_format()
+number_format &formattable::get_number_format()
 {
     return number_format_;
 }
 
-const number_format &common_style::get_number_format() const
+const number_format &formattable::get_number_format() const
 {
     return number_format_;
 }
 
-void common_style::set_number_format(const xlnt::number_format &new_number_format)
+void formattable::set_number_format(const xlnt::number_format &new_number_format)
 {
     number_format_ = new_number_format;
     number_format_applied(true);
 }
 
-border &common_style::get_border()
+border &formattable::get_border()
 {
     return border_;
 }
 
-const border &common_style::get_border() const
+const border &formattable::get_border() const
 {
     return border_;
 }
 
-void common_style::set_border(const xlnt::border &new_border)
+void formattable::set_border(const xlnt::border &new_border)
 {
     border_ = new_border;
     border_applied(true);
 }
 
-fill &common_style::get_fill()
+fill &formattable::get_fill()
 {
     return fill_;
 }
 
-const fill &common_style::get_fill() const
+const fill &formattable::get_fill() const
 {
     return fill_;
 }
 
-void common_style::set_fill(const xlnt::fill &new_fill)
+void formattable::set_fill(const xlnt::fill &new_fill)
 {
     fill_ = new_fill;
     fill_applied(true);
 }
 
-font &common_style::get_font()
+font &formattable::get_font()
 {
     return font_;
 }
 
-const font &common_style::get_font() const
+const font &formattable::get_font() const
 {
     return font_;
 }
 
-void common_style::set_font(const xlnt::font &new_font)
+void formattable::set_font(const xlnt::font &new_font)
 {
     font_ = new_font;
     font_applied(true);
 }
 
-protection &common_style::get_protection()
+protection &formattable::get_protection()
 {
     return protection_;
 }
 
-const protection &common_style::get_protection() const
+const protection &formattable::get_protection() const
 {
     return protection_;
 }
 
-void common_style::set_protection(const xlnt::protection &new_protection)
+void formattable::set_protection(const xlnt::protection &new_protection)
 {
     protection_ = new_protection;
     protection_applied(true);
 }
 
-std::string common_style::to_hash_string() const
+std::string formattable::to_hash_string() const
 {
-    std::string hash_string("common_style:");
+    std::string hash_string("formattable:");
     
     hash_string.append(std::to_string(alignment_applied()));
     hash_string.append(alignment_applied() ? std::to_string(alignment_.hash()) : ":");
@@ -191,62 +191,62 @@ std::string common_style::to_hash_string() const
     return hash_string;
 }
 
-void common_style::alignment_applied(bool applied)
+void formattable::alignment_applied(bool applied)
 {
     apply_alignment_ = applied;
 }
 
-void common_style::border_applied(bool applied)
+void formattable::border_applied(bool applied)
 {
     apply_border_ = applied;
 }
 
-void common_style::fill_applied(bool applied)
+void formattable::fill_applied(bool applied)
 {
     apply_fill_ = applied;
 }
 
-void common_style::font_applied(bool applied)
+void formattable::font_applied(bool applied)
 {
     apply_font_ = applied;
 }
 
-void common_style::number_format_applied(bool applied)
+void formattable::number_format_applied(bool applied)
 {
     apply_number_format_ = applied;
 }
 
-void common_style::protection_applied(bool applied)
+void formattable::protection_applied(bool applied)
 {
     apply_protection_ = applied;
 }
 
-bool common_style::alignment_applied() const
+bool formattable::alignment_applied() const
 {
     return apply_alignment_;
 }
 
-bool common_style::border_applied() const
+bool formattable::border_applied() const
 {
     return apply_border_;
 }
 
-bool common_style::fill_applied() const
+bool formattable::fill_applied() const
 {
     return apply_fill_;
 }
 
-bool common_style::font_applied() const
+bool formattable::font_applied() const
 {
     return apply_font_;
 }
 
-bool common_style::number_format_applied() const
+bool formattable::number_format_applied() const
 {
     return apply_number_format_;
 }
 
-bool common_style::protection_applied() const
+bool formattable::protection_applied() const
 {
     return apply_protection_;
 }
diff --git a/source/styles/cell_style.cpp b/source/styles/format.cpp
similarity index 79%
rename from source/styles/cell_style.cpp
rename to source/styles/format.cpp
index dbf256dc..bc21fe94 100644
--- a/source/styles/cell_style.cpp
+++ b/source/styles/format.cpp
@@ -21,27 +21,27 @@
 //
 // @license: http://www.opensource.org/licenses/mit-license.php
 // @author: see AUTHORS file
+
 #include <xlnt/cell/cell.hpp>
-#include <xlnt/styles/cell_style.hpp>
 #include <xlnt/styles/font.hpp>
+#include <xlnt/styles/format.hpp>
 #include <xlnt/styles/number_format.hpp>
 #include <xlnt/styles/protection.hpp>
 #include <xlnt/utils/hash_combine.hpp>
 
 namespace xlnt {
 
-cell_style::cell_style()
+format::format()
 {
 }
 
-cell_style::cell_style(const cell_style &other)
-    : common_style(other)
+format::format(const format &other) : formattable(other)
 {
 }
 
-cell_style &cell_style::operator=(const cell_style &other)
+format &format::operator=(const format &other)
 {
-    common_style::operator=(other);
+    formattable::operator=(other);
     
     parent_ = other.parent_;
     named_style_name_ = other.named_style_name_;
@@ -49,10 +49,10 @@ cell_style &cell_style::operator=(const cell_style &other)
     return *this;
 }
 
-std::string cell_style::to_hash_string() const
+std::string format::to_hash_string() const
 {
-    auto hash_string = common_style::to_hash_string();
-    hash_string.append(":cell_style:");
+    auto hash_string = formattable::to_hash_string();
+    hash_string.append(":format:");
     
     if (!named_style_name_.empty())
     {
@@ -66,9 +66,14 @@ std::string cell_style::to_hash_string() const
     return hash_string;
 }
 
-void cell_style::set_named_style(const std::string &style_name)
+void format::set_style(const std::string &style_name)
 {
     named_style_name_ = style_name;
 }
 
+bool format::has_style() const
+{
+    return !named_style_name_.empty();
+}
+
 } // namespace xlnt
diff --git a/source/styles/named_style.cpp b/source/styles/style.cpp
similarity index 72%
rename from source/styles/named_style.cpp
rename to source/styles/style.cpp
index e10d10ef..75f717f3 100644
--- a/source/styles/named_style.cpp
+++ b/source/styles/style.cpp
@@ -21,27 +21,29 @@
 //
 // @license: http://www.opensource.org/licenses/mit-license.php
 // @author: see AUTHORS file
-#include <xlnt/styles/named_style.hpp>
+
+#include <xlnt/styles/style.hpp>
 
 namespace xlnt {
 
-named_style::named_style()
-    : hidden_(false),
+style::style()
+    : formattable(),
+      hidden_(false),
       builtin_id_(0)
 {
 }
 
-named_style::named_style(const named_style &other)
-    : common_style(other),
+style::style(const style &other)
+    : formattable(other),
       name_(other.name_),
       hidden_(other.hidden_),
       builtin_id_(other.builtin_id_)
 {
 }
 
-named_style &named_style::operator=(const named_style &other)
+style &style::operator=(const style &other)
 {
-    common_style::operator=(other);
+    formattable::operator=(other);
     
     name_ = other.name_;
     hidden_ = other.hidden_;
@@ -50,39 +52,39 @@ named_style &named_style::operator=(const named_style &other)
     return *this;
 }
 
-bool named_style::get_hidden() const
+bool style::get_hidden() const
 {
     return hidden_;
 }
 
-void named_style::set_hidden(bool value)
+void style::set_hidden(bool value)
 {
     hidden_ = value;
 }
 
-std::size_t named_style::get_builtin_id() const
+std::size_t style::get_builtin_id() const
 {
     return builtin_id_;
 }
 
-void named_style::set_builtin_id(std::size_t builtin_id)
+void style::set_builtin_id(std::size_t builtin_id)
 {
     builtin_id_ = builtin_id;
 }
 
-std::string named_style::get_name() const
+std::string style::get_name() const
 {
     return name_;
 }
 
-void named_style::set_name(const std::string &name)
+void style::set_name(const std::string &name)
 {
     name_ = name;
 }
 
-std::string named_style::to_hash_string() const
+std::string style::to_hash_string() const
 {
-    return common_style::to_hash_string() + name_;
+    return formattable::to_hash_string() + name_;
 }
 
 } // namespace xlnt
diff --git a/source/workbook/workbook.cpp b/source/workbook/workbook.cpp
index 5b176efb..a92f4e42 100644
--- a/source/workbook/workbook.cpp
+++ b/source/workbook/workbook.cpp
@@ -36,10 +36,10 @@
 #include <xlnt/serialization/excel_serializer.hpp>
 #include <xlnt/styles/alignment.hpp>
 #include <xlnt/styles/border.hpp>
-#include <xlnt/styles/cell_style.hpp>
+#include <xlnt/styles/format.hpp>
 #include <xlnt/styles/fill.hpp>
 #include <xlnt/styles/font.hpp>
-#include <xlnt/styles/named_style.hpp>
+#include <xlnt/styles/style.hpp>
 #include <xlnt/styles/number_format.hpp>
 #include <xlnt/styles/protection.hpp>
 #include <xlnt/utils/exceptions.hpp>
@@ -86,7 +86,7 @@ workbook::workbook() : d_(new detail::workbook_impl())
     d_->manifest_.add_override_type("/docProps/core.xml", "application/vnd.openxmlformats-package.core-properties+xml");
     d_->manifest_.add_override_type("/docProps/app.xml", "application/vnd.openxmlformats-officedocument.extended-properties+xml");
     
-    add_style(cell_style());
+    add_format(format());
 }
 
 workbook::workbook(encoding e) : workbook()
@@ -551,9 +551,9 @@ workbook::~workbook()
 {
 }
 
-const std::vector<named_style> &workbook::get_named_styles() const
+const std::vector<style> &workbook::get_styles() const
 {
-    return d_->named_styles_;
+    return d_->styles_;
 }
 
 bool workbook::get_data_only() const
@@ -605,20 +605,22 @@ std::vector<named_range> workbook::get_named_ranges() const
     return named_ranges;
 }
 
-std::size_t workbook::add_style(const cell_style &style)
+std::size_t workbook::add_format(const format &style)
 {
-    cell_style style_copy = style;
+    auto format_copy = style;
     
     //TODO this is ugly
     if (!style.get_number_format().has_id())
     {
         bool match = false;
         
-        for (std::size_t i = 0; i < d_->cell_styles_.size(); i++)
+        for (std::size_t i = 0; i < d_->formats_.size(); i++)
         {
-            if (d_->cell_styles_.at(i).get_number_format().get_format_string() == style_copy.get_number_format().get_format_string())
+            const auto &current_number_format = d_->formats_.at(i).get_number_format();
+            
+            if (current_number_format.get_format_string() == format_copy.get_number_format().get_format_string())
             {
-                style_copy.set_number_format(d_->cell_styles_.at(i).get_number_format());
+                format_copy.set_number_format(current_number_format);
                 match = true;
                 break;
             }
@@ -626,36 +628,37 @@ std::size_t workbook::add_style(const cell_style &style)
         
         if (!match)
         {
-            style_copy.get_number_format().set_id(d_->next_custom_format_id_++);
+            format_copy.get_number_format().set_id(d_->next_custom_format_id_++);
         }
     }
     
-    for (std::size_t i = 0; i < d_->cell_styles_.size(); i++)
+    // TODO hashmap?
+    for (std::size_t i = 0; i < d_->formats_.size(); i++)
     {
-        if (d_->cell_styles_[i] == style_copy)
+        if (d_->formats_[i] == format_copy)
         {
             return i;
         }
     }
     
-    d_->cell_styles_.push_back(style_copy);
+    d_->formats_.push_back(format_copy);
     
-    return d_->cell_styles_.size() - 1;
+    return d_->formats_.size() - 1;
 }
 
-void workbook::clear_styles()
+void workbook::clear_formats()
 {
-    d_->cell_styles_.clear();
+    d_->formats_.clear();
 }
 
-cell_style &workbook::get_style(std::size_t style_index)
+format &workbook::get_format(std::size_t format_index)
 {
-    return d_->cell_styles_.at(style_index);
+    return d_->formats_.at(format_index);
 }
 
-const cell_style &workbook::get_style(std::size_t style_index) const
+const format &workbook::get_format(std::size_t format_index) const
 {
-    return d_->cell_styles_.at(style_index);
+    return d_->formats_.at(format_index);
 }
 
 manifest &workbook::get_manifest()
@@ -726,24 +729,24 @@ const std::vector<std::uint8_t> &workbook::get_thumbnail() const
     return d_->thumbnail_;
 }
 
-named_style &workbook::create_named_style(const std::string &name)
+style &workbook::create_style(const std::string &name)
 {
-    named_style style;
+    style style;
     style.set_name(name);
     
-    d_->named_styles_.push_back(style);
+    d_->styles_.push_back(style);
     
-    return d_->named_styles_.back();
+    return d_->styles_.back();
 }
 
-std::vector<cell_style> &workbook::get_styles()
+std::vector<format> &workbook::get_formats()
 {
-    return d_->cell_styles_;
+    return d_->formats_;
 }
 
-const std::vector<cell_style> &workbook::get_styles() const
+const std::vector<format> &workbook::get_formats() const
 {
-    return d_->cell_styles_;
+    return d_->formats_;
 }
 
 } // namespace xlnt