go too far vs wear down

go too far

verb
  • To exceed an unstated limit, especially a limit of acceptable behaviour. 

wear down

verb
  • To eventually persuade or defeat (someone) through persistent effort. 

  • To cause (someone) physical or mental fatigue. 

  • Used other than figuratively or idiomatically: see wear, down. 

How often have the words go too far and wear down occurred in a corpus of books? (source: Google Ngram Viewer )