formation vs geological formation

formation and geological formation both are nouns.

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

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

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

formation (noun)	geological formation (noun)
the act of fabricating something in a particular shape	(geology) the geological features of the earth
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