fool vs dupe

fool and dupe both are nouns.

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

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

Other hypernyms of fool include victim.

As verbs, fool and dupe are synonyms defined as:

Other synonyms of fool include befool, cod, gull, put on, put one across, put one over, slang, take in.

fool (noun)	dupe (noun)
a person who lacks good judgment	a person who is tricked or swindled
a person who is gullible and easy to take advantage of
a professional clown employed to entertain a king or nobleman in the Middle Ages

fool (verb)	dupe (verb)
indulge in horseplay	fool or hoax
fool or hoax
spend frivolously and unwisely
make a fool or dupe of