intaglio vs xylograph

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. 

xylograph

noun
  • A print taken from such an engraving. 

  • An engraving in wood or woodcut, especially one used in printing predating the Western tradition (14th c.). 

verb
  • To make a print from an engraving in wood. 

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