painting vs tempera

painting

noun
  • An illustration or artwork done with the use of paint. 

  • The same activity as an art form. 

  • The action of applying paint to a surface. 

tempera

noun
  • A painting done in this medium. 

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

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