Definitions for AS Media Key Terms
Continuity:  The maintenance of continuous action and self-consistent detail in the various scenes of a movie or broadcast.

Match on Action: Either an action commenced in shot A is completed in shot B, or an action in shot A is mirrored by an action in shot B, for example when we cut from character A in location A reading a letter to character B in location B reading the same letter.

Shot/Reverse shot: Shot reverse shot (or shot/countershot) is a film technique where one character is shown looking at another character (often off-screen), and then the other character is shown looking back at the first character.

180 degree rule: The 180° rule is a basic guideline in film making that states that two characters (or other elements) in the same scene should always have the same left/right relationship to each other. If the camera passes over the imaginary axis connecting the two subjects, it is called crossing the line.