Nouns

(n)formationan arrangement of people or things acting as a unit“a defensive formation”, “a formation of planes”
(n)formation, shapingthe act of fabricating something in a particular shape
(n)constitution, establishment, formation, organization, organisationthe act of forming or establishing something“the constitution of a PTA group last year”, “it was the establishment of his reputation”, “he still remembers the organization of the club”
(n)geological formation, formation(geology) the geological features of the earth
(n)formationa particular spatial arrangement
(n)formationnatural process that causes something to form“the formation of gas in the intestine”, “the formation of crystals”, “the formation of pseudopods”
(n)formationcreation by mental activity“the formation of sentences”, “the formation of memories”