noun.
A collection of people or things united into a group.
The Century Dictionary and Cyclopedia
noun.
The act, process, or result of arranging in a group; relative arrangement or disposition, as of figures in a painting, persons on a stage or in a dance, incidents in a story, etc.
the GNU version of the Collaborative International Dictionary of English
noun.
The disposal or relative arrangement of figures or objects, as in, drawing, painting, and sculpture, or in ornamental design.