neuroleptic vs ataractic drug

neuroleptic and ataractic drug both are nouns.

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

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

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

neuroleptic (noun)	ataractic drug (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