footage vs photoplay

footage

noun
  • An amount of film or tape that has been used to record something. 

  • A measurement in feet. 

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