SPLIT SCREEN SHOT
The space of the frame is split into two, three, or more frames each with their own subject. Usually the events shown in each section of the split screen are simultaneous. But Split screen can also be used to show flashbacks or other events. For example, two people are talking on the phone. They're in different locations, but you wish to show the reactions of both simultaneously. Or, watch Run, Lola, Run to see another use of split screen.