habituate vs drug

habituate is not a noun while drug is a noun.

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

As verbs, drug is a hyponym of habituate; that is, drug is a word with a more specific, narrower meaning than habituate:

Other hyponyms of habituate include smoke, do drugs.

habituate (noun)	drug (noun)
	a substance that is used as a medicine or narcotic

habituate (verb)	drug (verb)
make psychologically or physically used (to something)	administer a drug to
take or consume (regularly or habitually)	use recreational drugs