orgiastic vs bacchanalian

orgiastic and bacchanalian both are adjectives.

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

As adjectives, orgiastic and bacchanalian are synonyms defined as:

Other synonyms of orgiastic include bacchanal, bacchic, carousing.

orgiastic (adjective)	bacchanalian (adjective)
used of riotously drunken merrymaking	used of riotously drunken merrymaking
used of frenzied sexual activity