medication vs drug

medication and drug both are nouns.

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

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

medication: (medicine) something that treats or prevents or alleviates the symptoms of disease
drug: a substance that is used as a medicine or narcotic

medication (noun)	drug (noun)
the act of treating with medicines or remedies	a substance that is used as a medicine or narcotic
(medicine) something that treats or prevents or alleviates the symptoms of disease

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