beneficial vs cathartic

beneficial

adj
  • Helpful or good to something or someone. 

  • Relating to a benefice. 

noun
  • Something that is beneficial. 

cathartic

adj
  • Purgative; inducing mental or physical catharsis. 

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

noun
  • A laxative. 

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