antipsychotic agent vs neuroleptic agent

antipsychotic agent and neuroleptic agent both are nouns.

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

As nouns, antipsychotic agent and neuroleptic agent are synonyms defined as:

antipsychotic agent and neuroleptic agent: tranquilizer used to treat psychotic conditions when a calming effect is desired

antipsychotic agent (noun)	neuroleptic agent (noun)
tranquilizer used to treat psychotic conditions when a calming effect is desired	tranquilizer used to treat psychotic conditions when a calming effect is desired