aspect vs background

aspect and background both are nouns.

Word	Noun	Adjective	Verb	Adverb
aspect	Yes	No	No	No
background	Yes	No	Yes	No

As nouns, background is a hyponym of aspect; that is, background is a word with a more specific, narrower meaning than aspect:

aspect: the visual percept of a region
background: the part of a scene (or picture) that lies behind objects in the foreground

Other hyponyms of aspect include ground, coast, exposure, foreground, glimpse, middle distance, side view, tableau.

aspect (noun)	background (noun)
the feelings expressed on a person's face	scenery hung at back of stage
a characteristic to be considered	(computer science) the area of the screen in graphical user interfaces against which icons and windows appear
a distinct feature or element in a problem	a person's social heritage: previous experience or training
the visual percept of a region	the part of a scene (or picture) that lies behind objects in the foreground
the beginning or duration or completion or repetition of the action of a verb	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

aspect (verb)	background (verb)
	understate the importance or quality of