computer science vs input

computer science and input both are nouns.

Word	Noun	Adjective	Verb	Adverb
computer science	Yes	No	No	No
input	Yes	No	Yes	No

computer science (noun)	input (noun)
the branch of engineering science that studies (with the aid of computers) computable processes and structures	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

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