chew out vs reprove

chew out

verb
  • To lecture, scold, reprimand, or rebuke, especially in an angry tone of voice. 

reprove

verb
  • to criticise, rebuke or reprimand (someone), usually in a gentle and kind tone. 

  • To prove again. 

  • to deny or reject (a feeling, behaviour, action etc.). 

  • to express disapproval. 

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