decorate vs japan

decorate

verb
  • To furnish with decorations. 

  • To extend a method, etc. by attaching some further code item. 

  • To honor by providing a medal, ribbon, or other adornment. 

  • To decorate an interior space, as a house, room, or office. 

  • To improve the appearance of an interior of, as a house, room, or office. 

japan

verb
  • To varnish with japan. 

noun
  • A hard black enamel varnish containing asphalt. 

  • Lacquerware. 

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