panorama vs background

panorama and background both are nouns.

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

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

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

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

panorama (noun)	background (noun)
a picture (or series of pictures) representing a continuous scene	scenery hung at back of stage
the visual percept of a region	(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

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