cathartic vs physic

cathartic

adj
  • Purgative; inducing mental or physical catharsis. 

  • That which releases emotional tension, especially after an overwhelming experience. 

noun
  • A laxative. 

physic

adj
  • Relating to or concerning existent materials; physical. 

verb
  • To administer medicine to, especially a purgative. 

  • To cure or heal. 

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