movie vs photoplay

movie

noun
  • A cinema. 

  • A recorded sequence of images displayed on a screen at a rate sufficiently fast to create the appearance of motion. 

photoplay

noun
  • A theatrical play that has been filmed for showing as a movie. 

  • A novel adapted from a movie and illustrated with photographic stills taken from the film. Usage largely confined to the silent era of Hollywood. 

How often have the words movie and photoplay occurred in a corpus of books? (source: Google Ngram Viewer )