dyestuff vs tempera

dyestuff

noun
  • Any soluble pigment used for dyeing the hair, fabric, etc. 

tempera

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

  • A painting done in this medium. 

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