excoriate vs rake someone over the coals

excoriate

verb
  • To strongly denounce or censure. 

  • To wear off the skin of; to chafe or flay. 

rake someone over the coals

verb
  • To berate someone at length, usually from a position of authority or moral authority. 

How often have the words excoriate and rake someone over the coals occurred in a corpus of books? (source: Google Ngram Viewer )