fresco vs japan

fresco

noun
  • An artwork made by applying water-based pigment to wet or fresh lime mortar or plaster. 

  • The technique used to make such an artwork. 

  • A cool, refreshing state of the air; coolness, duskiness, shade. 

verb
  • To paint using fresco. 

japan

noun
  • A hard black enamel varnish containing asphalt. 

  • Lacquerware. 

verb
  • To varnish with japan. 

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