bacchanal vs drunken revelry

bacchanal and drunken revelry both are nouns.

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

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

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

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

bacchanal (noun)	drunken revelry (noun)
a wild gathering involving excessive drinking and promiscuity	a wild gathering involving excessive drinking and promiscuity
someone who engages in drinking bouts
a drunken reveller; a devotee of Bacchus

bacchanal (adjective)	drunken revelry (adjective)
used of riotously drunken merrymaking