carving vs mezzotint

carving

noun
  • A carved object. 

  • The act or craft of producing a carved object. 

verb
  • Executing turns without pivoting. 

mezzotint

noun
  • A form of intaglio etching in which a metal plate is roughened evenly and then smoothed to bring out an image. 

  • An etching or print made using this method. 

verb
  • To make such etchings 

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