medicate vs drug

medicate is not a noun while drug is a noun.

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

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

Other hyponyms of medicate include dose, salve.

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

medicate (verb)	drug (verb)
treat medicinally, treat with medicine	administer a drug to
impregnate with a medicinal substance	use recreational drugs