merrymaking vs revel

merrymaking and revel both are nouns.

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

As nouns, revel is a hyponym of merrymaking; that is, revel is a word with a more specific, narrower meaning than merrymaking:

Other hyponyms of merrymaking include high jinks, high jinx, hijinks, jinks, revelry.

merrymaking (noun)	revel (noun)
a boisterous celebration; a merry festivity	unrestrained merrymaking

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