whoop it up vs wassail

whoop it up is not a noun while wassail is a noun.

Word	Noun	Adjective	Verb	Adverb
whoop it up	No	No	Yes	No
wassail	Yes	No	Yes	No

As verbs, whoop it up and wassail are synonyms defined as:

whoop it up and wassail: celebrate noisily, often indulging in drinking; engage in uproarious festivities

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

whoop it up (noun)	wassail (noun)
	a punch made of sweetened ale or wine heated with spices and roasted apples; especially at Christmas

whoop it up (verb)	wassail (verb)
celebrate noisily, often indulging in drinking; engage in uproarious festivities	propose a toast to
	celebrate noisily, often indulging in drinking; engage in uproarious festivities