big screen vs photoplay

big screen

noun
  • The large viewing surface upon which films are projected in a cinema. 

  • movies, or that which is related to movies or cinema. 

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