bloodletting vs witch-hunt

bloodletting

noun
  • The archaic practice of treating illness by removing some blood, believed to be tainted, from the stricken person. 

  • The diminishment of any resource with the hope that this will lead to a positive effect. 

  • A circumstance, such as a battle, where a large amount of blood is likely to be spilled through violence. 

witch-hunt

noun
  • A search for people believed to be using sorcery or harmful magic, typically in order to persecute or punish them. 

  • A public or political campaign or investigation which smears a person or group. 

  • An attempt to find and punish or harass a group of people perceived as a threat, usually on ideological or political grounds. 

verb
  • To perform a witch-hunt. 

How often have the words bloodletting and witch-hunt occurred in a corpus of books? (source: Google Ngram Viewer )