demulcent vs tiger balm

demulcent

noun
  • A soothing medication used to relieve pain in inflamed tissues. 

adj
  • Soothing or softening. 

tiger balm

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

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