celluloid vs cineplex

celluloid

noun
  • The genre of cinema; film. 

  • Any of a variety of thermoplastics created from nitrocellulose and camphor, once used as photographic film. 

cineplex

noun
  • A cinema having multiple theatres (showing rooms). 

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