flibbertigibbet vs fool

flibbertigibbet and fool both are nouns.

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

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

Other hypernyms of flibbertigibbet include muggins, sap, saphead, tomfool.

flibbertigibbet (noun)	fool (noun)
a female fool	a person who lacks good judgment
	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

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