emulsion vs enema

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. 

enema

noun
  • The fluid so injected. 

  • An injection of fluid into the large intestine by way of the rectum, usually for medical purposes. 

  • A device for administering such an injection. 

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