plague vs nark

plague and nark both are nouns.

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

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

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

plague (noun)	nark (noun)
an annoyance	an informer or spy working for the police
any large scale calamity (especially when thought to be sent by God)	a lawman concerned with narcotics violations
a swarm of insects that attack plants
a serious (sometimes fatal) infection of rodents caused by Yersinia pestis and accidentally transmitted to humans by the bite of a flea that has bitten an infected animal
any epidemic disease with a high death rate

plague (verb)	nark (verb)
annoy continually or chronically	inform or spy (for the police)
cause to suffer a blight	cause annoyance in; disturb, especially by minor irritations