liniment vs tiger balm

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. 

tiger balm

noun
  • A liniment containing camphor, menthol, etc., intended for pain relief. 

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