abusive vs acerbate

abusive

adj
  • Prone to treat someone badly by coarse, insulting words or other maltreatment; vituperative; reproachful; scurrilous. 

  • Being physically or emotionally injurious; characterized by repeated violence or other abuse. 

  • Wrongly used; perverted; misapplied; unjust; illegal. 

acerbate

adj
  • Embittered; having a sour disposition or nature. 

verb
  • To exasperate; to irritate. 

  • To make bitter or sour. 

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