laxative vs paregoric

laxative

noun
  • Any substance, such as a food or in the form of a medicine which has a laxative effect. 

adj
  • Having the effect of moving the bowels, or aiding digestion and preventing constipation. 

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. 

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