aperient vs paregoric

aperient

adj
  • Having a gentle laxative effect. 

noun
  • A laxative, either in the form of a medicine or a food such as asparagus or hops, which has the effect of moving the bowels, or aiding digestion and preventing constipation. 

paregoric

adj
  • Assuaging or soothing pain. 

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

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