anxiolytic drug vs tranquilizer

anxiolytic drug and tranquilizer both are nouns.

Word	Noun	Adjective	Verb	Adverb
anxiolytic drug	Yes	No	No	No
tranquilizer	Yes	No	No	No

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

anxiolytic drug: a tranquilizer used to relieve anxiety and reduce tension and irritability
tranquilizer: a drug used to reduce stress or tension without reducing mental clarity

Other hypernyms of anxiolytic drug include antianxiety agent, ataractic, ataractic agent, ataractic drug, tranquilliser, tranquillizer.

anxiolytic drug (noun)	tranquilizer (noun)
a tranquilizer used to relieve anxiety and reduce tension and irritability	a drug used to reduce stress or tension without reducing mental clarity