Context is a frame of reference. You may have different options or expectations in various situations. Yelling and screaming at a soccer game will seem normal, given the situation you are in – and all of its parts / where screaming and yelling in the line at a grocery store – will probably not. When you say “in the refrigerator” – we will assume – it is the one in your house / because that is your default context. When everyone is on the same page – with what context we’re in – we can communicate with speed and accuracy.