excitant vs stimulant

excitant and stimulant both are nouns.

Word	Noun	Adjective	Verb	Adverb
excitant	Yes	Yes	No	No
stimulant	Yes	Yes	No	No

As nouns, excitant and stimulant are synonyms defined as:

excitant and stimulant: a drug that temporarily quickens some vital process

Other synonyms of excitant include stimulant drug.

excitant (noun)	stimulant (noun)
a drug that temporarily quickens some vital process	a drug that temporarily quickens some vital process
	any stimulating information or event; acts to arouse action

excitant (adjective)	stimulant (adjective)
(of drugs e.g.) able to excite or stimulate	that stimulates