butyl nitrite vs excitant

butyl nitrite and excitant both are nouns.

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

As nouns, excitant is a hypernym of butyl nitrite; that is, excitant 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
excitant: a drug that temporarily quickens some vital process

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

butyl nitrite (noun)	excitant (noun)
a colorless pungent liquid sometimes used as a stimulant drug by drug abusers	a drug that temporarily quickens some vital process

butyl nitrite (adjective)	excitant (adjective)
	(of drugs e.g.) able to excite or stimulate