fool vs betray

fool is a noun but betray is not a noun.

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

As verbs, betray is a hypernym of fool; that is, betray is a word with a broader meaning than fool:

Other hypernyms of fool include deceive, lead astray.

fool (noun)	betray (noun)
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

fool (verb)	betray (verb)
indulge in horseplay	give away information about somebody
fool or hoax	reveal unintentionally
spend frivolously and unwisely	cause someone to believe an untruth
make a fool or dupe of	disappoint, prove undependable to; abandon, forsake
	deliver to an enemy by treachery
	be sexually unfaithful to one's partner in marriage