drug vs habituate

drug is a noun but habituate is not a noun.

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

As verbs, habituate is a hypernym of drug; that is, habituate is a word with a broader meaning than drug:

Other hypernyms of drug include use.

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

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