rotogravure vs woodcut

rotogravure

noun
  • A print made by such a method. 

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

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

woodcut

noun
  • A print produced with this method. 

  • A method of printmaking from such a block. 

  • An engraved block of wood, especially one used as a printing form. 

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