minor tranquilizer vs antianxiety drug

minor tranquilizer and antianxiety drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
minor tranquilizer	Yes	No	No	No
antianxiety drug	Yes	No	No	No

As nouns, minor tranquilizer and antianxiety drug are synonyms defined as:

minor tranquilizer and antianxiety drug: a tranquilizer used to relieve anxiety and reduce tension and irritability

Other synonyms of minor tranquilizer include anxiolytic, anxiolytic drug, minor tranquilliser, minor tranquillizer.

minor tranquilizer (noun)	antianxiety drug (noun)
a tranquilizer used to relieve anxiety and reduce tension and irritability	a tranquilizer used to relieve anxiety and reduce tension and irritability