butyl nitrite vs vasodilator

butyl nitrite and vasodilator both are nouns.

Word	Noun	Adjective	Verb	Adverb
butyl nitrite	Yes	No	No	No
vasodilator	Yes	No	No	No

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

butyl nitrite: a colorless pungent liquid sometimes used as a stimulant drug by drug abusers
vasodilator: a drug that causes dilation of blood vessels

Other hypernyms of butyl nitrite include excitant, stimulant, stimulant drug, vasodilative.

butyl nitrite (noun)	vasodilator (noun)
a colorless pungent liquid sometimes used as a stimulant drug by drug abusers	a drug that causes dilation of blood vessels