neuroleptic vs ataractic agent

neuroleptic and ataractic agent both are nouns.

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

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

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

neuroleptic (noun)	ataractic agent (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