CONTINUITY

[noun] [U]There has been no continuity (= smooth change or development) in that class - they've had a succession of four different teachers.(specialized) Continuity is also the way in which film and television broadcasts are joined together so that the action happens smoothly without a pause and, for example, the actor's appearance is the same in a particular part of a recording even if it has been filmed on different days.a continuity girl/man