stool pigeon vs stoolie

stool pigeon and stoolie both are nouns.

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

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

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

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

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