stoolie vs stool pigeon

stoolie and stool pigeon both are nouns.

Word	Noun	Adjective	Verb	Adverb
stoolie	Yes	No	No	No
stool pigeon	Yes	No	No	No

As nouns, stoolie and stool pigeon are synonyms defined as:

stoolie and stool pigeon: someone acting as an informer or decoy for the police

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

stoolie (noun)	stool pigeon (noun)
someone acting as an informer or decoy for the police	a dummy pigeon used to decoy others
	someone acting as an informer or decoy for the police