Composition

1. a:  the act or process of composing; specifically :  arrangement into specific proportion or relation and especially into artistic form
   b (1) :  the arrangement of type for printing <hand composition> (2) :  the production of type or typographic characters (as in photocomposition) arranged for printing

:  the manner in which something is composed

b :  general makeup <the changing ethnic composition of the city — Leonard Buder>

c :  the qualitative and quantitative makeup of a chemical compound

:  mutual settlement or agreement

:  a product of mixing or combining various elements or ingredients

:  an intellectual creation: as

a :  a piece of writing; especially :  a school exercise in the form of a brief essay

b :  a written piece of music especially of considerable size and complexity

:  the quality or state of being compound

:  the operation of forming a composite function; also :  composite function