carousing vs bacchanalian

carousing and bacchanalian both are adjectives.

Word	Noun	Adjective	Verb	Adverb
carousing	No	Yes	No	No
bacchanalian	No	Yes	No	No

As adjectives, carousing and bacchanalian are synonyms defined as:

Other synonyms of carousing include bacchanal, bacchic, orgiastic.

carousing (adjective)	bacchanalian (adjective)
used of riotously drunken merrymaking	used of riotously drunken merrymaking