noun

 

sound Sounds in the background are not the main sounds you can hear.

background music/noise

 

person a person's education, family, and experience of life

She came from a middle-class background.

 

picture the parts at the back of a picture, view, etc which are not the main things you look at

gold stars on a black background

 

situation the situation that an event happens in, or things which have happened in the past which affect it

The talks are taking place against a background of economic uncertainty.