intoxicant vs drug

intoxicant and drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
intoxicant	Yes	Yes	No	No
drug	Yes	No	Yes	No

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

intoxicant (noun)	drug (noun)
a drug that can produce a state of intoxication	a substance that is used as a medicine or narcotic
a liquor or brew containing alcohol as the active agent

intoxicant (adjective)	drug (adjective)
causing intoxication

intoxicant (verb)	drug (verb)
	administer a drug to
	use recreational drugs