bacchanalia vs drunken revelry

bacchanalia and drunken revelry both are nouns.

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

As nouns, bacchanalia and drunken revelry are synonyms defined as:

bacchanalia and drunken revelry: a wild gathering involving excessive drinking and promiscuity

Other synonyms of bacchanalia include bacchanal, debauch, debauchery, orgy, riot, saturnalia.

bacchanalia (noun)	drunken revelry (noun)
a wild gathering involving excessive drinking and promiscuity	a wild gathering involving excessive drinking and promiscuity