rotogravure vs transferring

rotogravure

noun
  • A portion of a printed work produced by this method. 

  • A printing process by which the paper is rolled through intaglio cylinders. 

  • A print made by such a method. 

transferring

noun
  • The act by which something is transferred; a transfer. 

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