The difference between linear and non-linear is due to the interactivity of being able to change the order in which a film is played. If a film can change order in the film by choosing a scene or being able to go forward or backward this is known as Non-Linear. Linear on the other hand generally means that the film cannot be changed to play from backward to forward and you watch it from beginning to end
A good example of a Non-Linear film is SAW and a good Example of a Linear film is Woman in Black;
A good example of a Non-Linear film is SAW and a good Example of a Linear film is Woman in Black;
An example of a series of films having a motief are the James Bond films