chasing vs gravure

chasing

noun
  • Engraved or embossed decoration. 

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 chasing and gravure occurred in a corpus of books? (source: Google Ngram Viewer )