emulsion vs lavage

emulsion

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

  • A colloid in which both phases are liquid. 

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

verb
  • To paint with emulsion paint. 

lavage

noun
  • A washing of a hollow organ. 

  • A washing. 

verb
  • To wash a hollow organ 

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