Panning
In live
action the camera is turned around. In Flash a symbol of everything on the
stage is tweened across the stage between to keyframes.
Zooms and Truck-Ins
A zoom pushes
the audience closer to a subject via the camera lens, a truck-in physically
moves the camera closer to a subject.
In Flash a zoom is just a symbol of everything on the stage that is scaled up or down with a tween between two instances of that symbol.
A truck-in requires keeping the background static in a layer while the foreground grows towards the camera. The foreground is a symbol that is scaled up with a tween between two instances of that symbol