filmmaking vs silver screen

filmmaking

noun
  • The activity of preparing edited video works, formerly principally films, whether for entertainment or other purposes. 

  • The manufacture of physical film. 

silver screen

noun
  • By extension, movies, or that which is related to movies or cinema. 

  • A cinema screen onto which movies are projected. 

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