acerbate vs have a cow

acerbate

verb
  • To make bitter or sour. 

  • To exasperate; to irritate. 

adj
  • Embittered; having a sour disposition or nature. 

have a cow

verb
  • To get angry; have a fit. 

  • My mom had a cow when I came in late. 

  • Used other than figuratively or idiomatically: see have, a, cow. 

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