riot vs revel

riot and revel both are nouns.

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

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

Other hypernyms of riot include revelry.

As verbs, revel is a hypernym of riot; that is, revel is a word with a broader meaning than riot:

riot: engage in boisterous, drunken merrymaking
revel: celebrate noisily, often indulging in drinking; engage in uproarious festivities

Other hypernyms of riot include jollify, make happy, make merry, make whoopee, racket, wassail, whoop it up.

riot (noun)	revel (noun)
a public act of violence by an unruly mob	unrestrained merrymaking
a wild gathering involving excessive drinking and promiscuity
a joke that seems extremely funny
a state of disorder involving group violence

riot (verb)	revel (verb)
take part in a riot; disturb the public peace by engaging in a riot	take delight in
engage in boisterous, drunken merrymaking	celebrate noisily, often indulging in drinking; engage in uproarious festivities