geological formation vs formation

geological formation and formation both are nouns.

Word	Noun	Adjective	Verb	Adverb
geological formation	Yes	No	No	No
formation	Yes	No	No	No

As nouns, geological formation and formation are synonyms defined as:

geological formation and formation: (geology) the geological features of the earth

geological formation (noun)	formation (noun)
(geology) the geological features of the earth	the act of fabricating something in a particular shape
	the act of forming or establishing something
	creation by mental activity
	a particular spatial arrangement
	an arrangement of people or things acting as a unit
	(geology) the geological features of the earth
	natural process that causes something to form