cinematography vs photoplay

cinematography

noun
  • The art, process, or job of filming movies. 

  • Motion picture photography. 

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 cinematography and photoplay occurred in a corpus of books? (source: Google Ngram Viewer )