displease vs nark

displease is not a noun while nark is a noun.

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

As verbs, nark is a hyponym of displease; that is, nark is a word with a more specific, narrower meaning than displease:

Other hyponyms of displease include annoy, bother, chafe, devil, get at, get to, gravel, irritate, nettle, rag, rile, vex, repel, repulse, dissatisfy.

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

displease (verb)	nark (verb)
give displeasure to	inform or spy (for the police)
	cause annoyance in; disturb, especially by minor irritations