sucker vs dupe

sucker and dupe both are nouns.

Word	Noun	Adjective	Verb	Adverb
sucker	Yes	No	No	No
dupe	Yes	No	Yes	No

As nouns, dupe is a hypernym of sucker; that is, dupe is a word with a broader meaning than sucker:

Other hypernyms of sucker include victim.

sucker (noun)	dupe (noun)
mostly North American freshwater fishes with a thick-lipped mouth for feeding by suction; related to carps	a person who is tricked or swindled
an organ specialized for sucking nourishment or for adhering to objects by suction
hard candy on a stick
flesh of any of numerous North American food fishes with toothless jaws
a drinker who sucks (as at a nipple or through a straw)
a person who is gullible and easy to take advantage of
a shoot arising from a plant's roots

sucker (verb)	dupe (verb)
	fool or hoax