paregoric vs tiger balm

paregoric

noun
  • A painkiller; a medicine which soothes or relieves pain; specifically the traditional patent medicine consisting of camphorated tincture of opium. 

adj
  • Assuaging or soothing pain. 

tiger balm

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

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