engraving vs gravure

engraving

noun
  • The art of producing an image from an engraved printing form, typically made of copper. 

  • A print produced from an engraving. 

  • The art of drawing music notation at high quality, particularly on a computer. 

  • The practice of incising a design onto a hard, flat surface, by cutting grooves into it. 

gravure

noun
  • A type of intaglio printing process, in which an image is engraved onto a rotating copper cylinder. 

  • A style of Japanese softcore; glamour photography. 

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