ridgeline vs formation

ridgeline and formation both are nouns.

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

As nouns, formation is a hypernym of ridgeline; that is, formation is a word with a broader meaning than ridgeline:

Other hypernyms of ridgeline include geological formation.

ridgeline (noun)	formation (noun)
a long narrow range of hills	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