What is the difference between apparent motion and apparent movement?
There is no difference between the two; illusionary movement and motion are interchangeable terms. For example, a definition of apparent motion is (Oxford Index): 


  A sensation of movement in the absence of actual movement, [for example] visual illusions [...]


And a definition for apparent movement (Psychology Dictionary) is:


  [A]n illusion of motion or change of size that is cued by visual tricks.


In other words, apparent movement and apparent motion are the same thing. The two visual illusions you provide, though, are caused by two different neurophysiological phenomena altogether. 

The flip book relies on persistent vision where multiple images are blurred into a coherent perception over time.      

The rotating spokes illusion is thought to be caused by asymmetric luminance steps that trigger the motion detectors in the brain.