tempera vs war paint

tempera

noun
  • A medium used to bind pigments in painting, as well as the associated artistic techniques. 

  • A painting done in this medium. 

war paint

noun
  • Cosmetics, makeup. 

  • Pigments ritually applied to the face and/or body (originally and still especially of a Native American warrior) prior to going into a battle. 

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