drunken revelry vs revel

drunken revelry and revel both are nouns.

Word	Noun	Adjective	Verb	Adverb
drunken revelry	Yes	No	No	No
revel	Yes	No	Yes	No

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

drunken revelry: a wild gathering involving excessive drinking and promiscuity
revel: unrestrained merrymaking

Other hypernyms of drunken revelry include revelry.

drunken revelry (noun)	revel (noun)
a wild gathering involving excessive drinking and promiscuity	unrestrained merrymaking

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