chevy vs nark

chevy is not a noun while nark is a noun.

Word	Noun	Adjective	Verb	Adverb
chevy	No	No	Yes	No
nark	Yes	No	Yes	No

As verbs, nark is a hypernym of chevy; that is, nark is a word with a broader meaning than chevy:

Other hypernyms of chevy include annoy, bother, chafe, devil, get at, get to, gravel, irritate, nettle, rag, rile, vex.

chevy (noun)	nark (noun)
	an informer or spy working for the police
	a lawman concerned with narcotics violations

chevy (verb)	nark (verb)
annoy continually or chronically	inform or spy (for the police)
	cause annoyance in; disturb, especially by minor irritations