antianxiety agent vs ataractic drug

antianxiety agent and ataractic drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
antianxiety agent	Yes	No	No	No
ataractic drug	Yes	No	No	No

As nouns, antianxiety agent and ataractic drug are synonyms defined as:

antianxiety agent and ataractic drug: a drug used to reduce stress or tension without reducing mental clarity

Other synonyms of antianxiety agent include ataractic, ataractic agent, tranquilizer, tranquilliser, tranquillizer.

antianxiety agent (noun)	ataractic drug (noun)
a drug used to reduce stress or tension without reducing mental clarity	a drug used to reduce stress or tension without reducing mental clarity