Continuity Editing

Shot Reverse Shot:
This is a film technique which one character is looking at another character and then the other character is shown looking back at the first character. Since the the characters are shown facing in opposite directions, the viewer assumes that they are looking at each other.
180 degree Rule:
The rule: the rule is the camera should remain at the same side and doesn't orientate the audience,this rule enforces continuity of the film. Their is an invisible line which the camera is meant to stay one side, the characters may be facing in opposite directions. For example one is on the right, and the other character is on the left.
Match on Action:
This is a an editing technique which the first shot cuts to another shot portraying the action of the subject in the first shot. This creates a sense of continuity as the action is carried on throughout the shot. It also allows the audience's attention to not be focused on the amount of cutting.

Steady Use Of Camera: 
This is when the camera man/woman holds the camera, steadily, it allows for it to have a smooth shot, even when moving quickly or at an uneven surface.