How about a face-off five different terms for a movie?
As expected, movie was most common, followed at quite a distance by film. The other three basically didn't figure in the graph. However, I think we can try to clarify this further: instead of the interest level, let's select the "growth relative to category" (i.e., entertainment) option.
Now we can see growth and decline of all five Google search terms/phrases. Growing from most to least were flick and motion picture. Film fluctuated but stayed at the same level almost. Going down were, from least to most, movie, motion picture and moving picture. I wonder whether these observations correspond with he linguistic evolution regarding which of the words gain and which lose "market share" in the standard vocabulary.