pest vs cuss

pest and cuss both are nouns.

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

As nouns, pest and cuss are synonyms defined as:

Other synonyms of pest include blighter, gadfly, pesterer.

pest (noun)	cuss (noun)
any unwanted and destructive insect or other animal that attacks food or crops or livestock etc.	profane or obscene expression usually of surprise or anger
a persistently annoying person	a persistently annoying person
any epidemic disease with a high death rate	a boy or man
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

pest (verb)	cuss (verb)
	utter obscenities or profanities