fink vs stoolpigeon

fink and stoolpigeon both are nouns.

Word	Noun	Adjective	Verb	Adverb
fink	Yes	No	Yes	No
stoolpigeon	Yes	No	No	No

As nouns, fink and stoolpigeon are synonyms defined as:

fink and stoolpigeon: someone acting as an informer or decoy for the police

Other synonyms of fink include canary, sneak, sneaker, snitch, snitcher, stool pigeon, stoolie.

fink (noun)	stoolpigeon (noun)
someone acting as an informer or decoy for the police	someone acting as an informer or decoy for the police

fink (verb)	stoolpigeon (verb)
confess to a punishable or reprehensible deed, usually under pressure
take the place of work of someone on strike