input vs stimulus

input and stimulus both are nouns.

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

As nouns, input and stimulus are synonyms defined as:

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

Other synonyms of input include stimulant, stimulation.

input (noun)	stimulus (noun)
a component of production; something that goes into the production of output	any stimulating information or event; acts to arouse action
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

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