stimulus vs input

stimulus and input both are nouns.

Word	Noun	Adjective	Verb	Adverb
stimulus	Yes	No	No	No
input	Yes	No	Yes	No

As nouns, stimulus and input are synonyms defined as:

stimulus and input: any stimulating information or event; acts to arouse action

Other synonyms of stimulus include stimulant, stimulation.

stimulus (noun)	input (noun)
any stimulating information or event; acts to arouse action	a component of production; something that goes into the production of output
	any stimulating information or event; acts to arouse action
	signal going into an electronic system
	a statement that expresses a personal opinion or belief or adds information

stimulus (verb)	input (verb)
	enter (data or a program) into a computer