formation

(geology) the geological features of the earth.

The act of forming or establishing something.

The act of fabricating something in a particular shape.

An arrangement of people or things acting as a unit.

“a defensive formation”

“a formation of planes”

A particular spatial arrangement.

Creation by mental activity.

“the formation of sentences”

“the formation of memories”

Natural process that causes something to form.

“the formation of gas in the intestine”

“the formation of crystals”