emulsion vs vaseline

emulsion

verb
  • To paint with emulsion paint. 

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. 

vaseline

verb
  • To lubricate with vaseline. 

noun
  • Any particular kind of petroleum jelly or of any similar lubricant. 

  • Petroleum jelly. 

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