computer science vs background

computer science and background both are nouns.

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

computer science (noun)	background (noun)
the branch of engineering science that studies (with the aid of computers) computable processes and structures	scenery hung at back of stage
	(computer science) the area of the screen in graphical user interfaces against which icons and windows appear
	a person's social heritage: previous experience or training
	the part of a scene (or picture) that lies behind objects in the foreground
	information that is essential to understanding a situation or problem
	extraneous signals that can be confused with the phenomenon to be observed or measured
	relatively unimportant or inconspicuous accompanying situation
	the state of the environment in which a situation exists

computer science (verb)	background (verb)
	understate the importance or quality of