Film Techniques

Match on Action: 

Refers to film editing and video editing techniques where the editor cuts from one shot to another view that matches the first shot's action

Shot/Reverse shot:

Where one character is shown looking at another character, and then the other character is shown looking back at the first character

180 degree rule: 

States that two characters in a scene should maintain the same left/right relationship to one another . When the camera crosses the line and the shot becomes a reverse angle.