anxiolytic vs antianxiety agent

anxiolytic and antianxiety agent both are nouns.

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

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

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

Other hypernyms of anxiolytic include ataractic, ataractic agent, ataractic drug, tranquilizer, tranquilliser, tranquillizer.

anxiolytic (noun)	antianxiety 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)	antianxiety agent (adjective)
anxiety relieving