bender vs revel

bender and revel both are nouns.

Word	Noun	Adjective	Verb	Adverb
bender	Yes	No	No	No
revel	Yes	No	Yes	No

As nouns, revel is a hypernym of bender; that is, revel is a word with a broader meaning than bender:

Other hypernyms of bender include revelry.

bender (noun)	revel (noun)
revelry in drinking; a merry drinking party	unrestrained merrymaking
a pitch of a baseball that is thrown with spin so that its path curves as it approaches the batter
a tool for bending

bender (verb)	revel (verb)
	take delight in
	celebrate noisily, often indulging in drinking; engage in uproarious festivities