Nickelodeon vs bioscope

Nickelodeon

noun
  • A small, rudimentary movie theater that charged five cents for admission, popular in North America from about 1905 to 1915. 

  • An American jukebox operated by nickels. 

  • A coin-operated player piano, often elaborated with percussion, banjos, bells, whistles, and other musical instruments and noise-makers. 

bioscope

noun
  • An early form of movie projector 

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