bushwhack vs come down on

bushwhack

verb
  • to fight, as a guerilla, especially in wooded country 

  • to ambush 

  • to travel through thick wooded country, cutting away scrub to make progress 

come down on

verb
  • To punish or criticize. 

How often have the words bushwhack and come down on occurred in a corpus of books? (source: Google Ngram Viewer )