big screen vs cinematograph

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. 

cinematograph

noun
  • A camera that could develop its own film and served as its own projector. 

verb
  • To employ the techniques of cinematography. 

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