Definitions of composition:

• noun:   something that is created by arranging several things to form a unified whole

  Example: "He envied the composition of their faculty"

• noun:   the spatial property resulting from the arrangement of parts in relation to each other and to the whole

  Example: "Harmonious composition is essential in a serious work of art"

• noun:   an essay (especially one written as an assignment)

  Example: "He got an A on his composition"

• noun:   a mixture of ingredients
• noun:   musical creation
• noun:   the way in which someone or something is composed
• noun:   art and technique of printing with movable type
• noun:   the act of creating written works
• noun:   a musical work that has been created

  Example: "The composition is written in four movements"