acerbate vs tick off

acerbate

verb
  • To exasperate; to irritate. 

  • To make bitter or sour. 

adj
  • Embittered; having a sour disposition or nature. 

tick off

verb
  • To annoy, aggravate. 

  • To sign with a tick. 

  • To reprimand. 

  • To list (create or recite a list). 

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