lure vs stool pigeon

lure and stool pigeon both are nouns.

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

As nouns, stool pigeon is a hyponym of lure; that is, stool pigeon is a word with a more specific, narrower meaning than lure:

lure: something used to lure fish or other animals into danger so they can be trapped or killed
stool pigeon: a dummy pigeon used to decoy others

Other hyponyms of lure include chum, fish lure, fisherman's lure, ground bait.

lure (noun)	stool pigeon (noun)
something used to lure fish or other animals into danger so they can be trapped or killed	a dummy pigeon used to decoy others
qualities that attract by seeming to promise some kind of reward	someone acting as an informer or decoy for the police
anything that serves as an enticement

lure (verb)	stool pigeon (verb)
provoke someone to do something through (often false or exaggerated) promises or persuasion