"background" - key terms from Wikipedia

background
background	and win means
background	biker
background	blur
background	cameo
background	check
background	checks
background	color
background	extinction rate
background	independence
background	indicates an event
background	investigation
background	layers
background	light
background	lights
background	material
background	means
background	music
background	noise
background	painting
background	performer
background	plane
background	radiation
background	vocals
background	vocals of this song
background	vocals on half
background	vocals on track
best background	score
blue background
book as background	characters
cosmic background
cosmic background	imager
cosmic background	radiation
cosmic microwave background
cosmic microwave background	radiation
desktop background
faint reply in the background
family background
houston participated in the background
lead and background	vocals
natural background	radiation
participated in the background	vocals
s stage as a background
series as background	characters
social background
solo and background	vocals
stage as a background	cameo
throughout the book as background
used as background	music
yellow background