minor tranquillizer vs anxiolytic drug

minor tranquillizer and anxiolytic drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
minor tranquillizer	Yes	No	No	No
anxiolytic drug	Yes	No	No	No

As nouns, minor tranquillizer and anxiolytic drug are synonyms defined as:

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

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

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