make merry vs revel

make merry is not a noun while revel is a noun.

Word	Noun	Adjective	Verb	Adverb
make merry	No	No	Yes	No
revel	Yes	No	Yes	No

As verbs, make merry and revel are synonyms defined as:

make merry and revel: celebrate noisily, often indulging in drinking; engage in uproarious festivities

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

make merry (noun)	revel (noun)
	unrestrained merrymaking

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