nudnick vs pest

nudnick and pest both are nouns.

Word	Noun	Adjective	Verb	Adverb
nudnick	Yes	No	No	No
pest	Yes	No	No	No

As nouns, pest is a hypernym of nudnick; that is, pest is a word with a broader meaning than nudnick:

Other hypernyms of nudnick include bore, dullard, blighter, cuss, gadfly, pesterer.

nudnick (noun)	pest (noun)
(Yiddish) someone who is a boring pest	any unwanted and destructive insect or other animal that attacks food or crops or livestock etc.
	a persistently annoying person
	any epidemic disease with a high death rate
	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