antipsychotic vs ataractic

antipsychotic and ataractic both are nouns.

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

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

antipsychotic: 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

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