intaglio vs lithograph

intaglio

noun
  • A design or piece of art which is engraved or etched into something. 

  • Any printing method in which the ink is laid upon the sunken parts of the printing form. 

verb
  • To engrave or etch using intaglio. 

lithograph

noun
  • A printed image produced by lithography. 

verb
  • To create a copy of an image through lithography. 

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