stoolie vs blabber

stoolie and blabber both are nouns.

Word	Noun	Adjective	Verb	Adverb
stoolie	Yes	No	No	No
blabber	Yes	No	Yes	No

As nouns, blabber is a hypernym of stoolie; that is, blabber is a word with a broader meaning than stoolie:

stoolie: someone acting as an informer or decoy for the police
blabber: one who reveals confidential information to the police or other authority

Other hypernyms of stoolie include betrayer, informer, rat, squealer.

stoolie (noun)	blabber (noun)
someone acting as an informer or decoy for the police	one who reveals confidential information to the police or other authority

stoolie (verb)	blabber (verb)
	speak (about unimportant matters) rapidly and incessantly