stimulant vs stimulation

stimulant and stimulation both are nouns.

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

As nouns, stimulant and stimulation are synonyms defined as:

stimulant and stimulation: any stimulating information or event; acts to arouse action

Other synonyms of stimulant include input, stimulus.

stimulant (noun)	stimulation (noun)
a drug that temporarily quickens some vital process	the act of arousing an organism to action
any stimulating information or event; acts to arouse action	mutual sexual fondling prior to sexual intercourse
	any stimulating information or event; acts to arouse action
	(physiology) the effect of a stimulus (on nerves or organs etc.)

stimulant (adjective)	stimulation (adjective)
that stimulates