diazoxide vs vasodilator

diazoxide and vasodilator both are nouns.

Word	Noun	Adjective	Verb	Adverb
diazoxide	Yes	No	No	No
vasodilator	Yes	No	No	No

As nouns, vasodilator is a hypernym of diazoxide; that is, vasodilator is a word with a broader meaning than diazoxide:

diazoxide: vasodilator (trade name Hyperstat) used to treat severe hypertension
vasodilator: a drug that causes dilation of blood vessels

Other hypernyms of diazoxide include vasodilative.

diazoxide (noun)	vasodilator (noun)
vasodilator (trade name Hyperstat) used to treat severe hypertension	a drug that causes dilation of blood vessels