emulsion vs greasepaint

emulsion

noun
  • The coating of photosensitive silver halide grains in a thin gelatine layer on a photographic film. 

  • A stable suspension of small droplets of one liquid in another with which it is immiscible. 

  • A colloid in which both phases are liquid. 

verb
  • To paint with emulsion paint. 

greasepaint

noun
  • A mixture of grease and colouring matter used as theatrical makeup 

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