chain of mountains vs notch

chain of mountains and notch both are nouns.

Word	Noun	Adjective	Verb	Adverb
chain of mountains	Yes	No	No	No
notch	Yes	No	Yes	No

chain of mountains (noun)	notch (noun)
a series of hills or mountains	a small cut
	a V-shaped or U-shaped indentation carved or scratched into a surface
	the location in a range of mountains of a geological formation that is lower than the surrounding peaks
	a V-shaped indentation

chain of mountains (verb)	notch (verb)
	notch a surface to record something
	cut or make a notch into