fathead vs fool

fathead and fool both are nouns.

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

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

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

fathead (noun)	fool (noun)
a man who is a stupid incompetent 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

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