FORMATION

An arrangement of people or things acting as a unit

Example: "A defensive formation"

The act of fabricating something in a particular shape

The act of forming or establishing something

Example: "The constitution of a pta group last year"

(geology) the geological features of the earth

A particular spatial arrangement

Natural process that causes something to form

Example: "The formation of gas in the intestine"

Creation by mental activity

Example: "The formation of sentences"