liniment vs vaseline

liniment

noun
  • A topical medical preparation intended to be rubbed into the skin with friction, as for example to relieve symptoms of arthritis. 

verb
  • To apply liniment to. 

vaseline

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

  • Petroleum jelly. 

verb
  • To lubricate with vaseline. 

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