decoy vs shill

decoy and shill both are nouns.

Word	Noun	Adjective	Verb	Adverb
decoy	Yes	No	Yes	No
shill	Yes	No	Yes	No

As nouns, shill is a hyponym of decoy; that is, shill is a word with a more specific, narrower meaning than decoy:

decoy: a beguiler who leads someone into danger (usually as part of a plot)
shill: a decoy who acts as an enthusiastic customer in order to stimulate the participation of others

Other hyponyms of decoy include roper.

decoy (noun)	shill (noun)
something used to lure fish or other animals into danger so they can be trapped or killed	a decoy who acts as an enthusiastic customer in order to stimulate the participation of others
a beguiler who leads someone into danger (usually as part of a plot)

decoy (verb)	shill (verb)
lure or entrap with or as if with a decoy	act as a shill