formation vs depression

formation and depression both are nouns.

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

As nouns, depression is a hyponym of formation; that is, depression is a word with a more specific, narrower meaning than formation:

formation (noun)	depression (noun)
the act of fabricating something in a particular shape	pushing down
the act of forming or establishing something	sad feelings of gloom and inadequacy
creation by mental activity	a sunken or depressed geological formation
a particular spatial arrangement	angular distance below the horizon (especially of a celestial object)
an arrangement of people or things acting as a unit	a concavity in a surface produced by pressing
(geology) the geological features of the earth	a mental state characterized by a pessimistic sense of inadequacy and a despondent lack of activity
natural process that causes something to form	an air mass of lower pressure; often brings precipitation
	a long-term economic state characterized by unemployment and low prices and low levels of trade and investment
	a state of depression and anhedonia so severe as to require clinical intervention