anxiolytic vs ataractic agent

anxiolytic and ataractic agent both are nouns.

Word	Noun	Adjective	Verb	Adverb
anxiolytic	Yes	Yes	No	No
ataractic agent	Yes	No	No	No

As nouns, ataractic agent is a hypernym of anxiolytic; that is, ataractic agent is a word with a broader meaning than anxiolytic:

anxiolytic: a tranquilizer used to relieve anxiety and reduce tension and irritability
ataractic agent: a drug used to reduce stress or tension without reducing mental clarity

anxiolytic (noun)	ataractic agent (noun)
a tranquilizer used to relieve anxiety and reduce tension and irritability	a drug used to reduce stress or tension without reducing mental clarity

anxiolytic (adjective)	ataractic agent (adjective)
anxiety relieving