Taken from a distance that is used to convey a sense of space or to locate action in a specific place. You will be able to see the whole body of a character.
Camera acts like the eyes of the subject and shows their perspective of the action. Can have characters looking at the camera directly. Could also be seen through a telescope, binoculars etc.
The imaginary line that must not be crossed in order to maintain continuity and not cause confusion to the audience with where the characters are placed.
When the camera itself is moved. This was traditionally accomplished by placing the camera on a literal track. This is often taken from the side of a subject.
Mixture of zooming-in & tracking-out whilst focussed on a subject. Makes it appear as if the subject is getting closer, whilst the background is getting further away.
Where the foreground action is in focus, whilst the background action is out of focus. Allows the director to literally focus the attention of the audience on a particular part of the frame.