mezzotint vs painting

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 

painting

noun
  • An illustration or artwork done with the use of paint. 

  • The same activity as an art form. 

  • The action of applying paint to a surface. 

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