ataractic drug vs ataractic agent

ataractic drug and ataractic agent both are nouns.

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

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

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

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

ataractic drug (noun)	ataractic agent (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