antipsychotic drug vs ataractic

antipsychotic drug and ataractic both are nouns.

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

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

antipsychotic drug: tranquilizer used to treat psychotic conditions when a calming effect is desired
ataractic: a drug used to reduce stress or tension without reducing mental clarity

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

antipsychotic drug (noun)	ataractic (noun)
tranquilizer used to treat psychotic conditions when a calming effect is desired	a drug used to reduce stress or tension without reducing mental clarity

antipsychotic drug (adjective)	ataractic (adjective)
	tending to soothe or tranquilize