diuretic drug vs drug

diuretic drug and drug both are nouns.

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

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

diuretic drug: any substance that tends to increase the flow of urine, which causes the body to get rid of excess water
drug: a substance that is used as a medicine or narcotic

diuretic drug (noun)	drug (noun)
any substance that tends to increase the flow of urine, which causes the body to get rid of excess water	a substance that is used as a medicine or narcotic

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