bloodletting vs pogrom

bloodletting

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

  • 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. 

pogrom

noun
  • A riot aimed at persecution or massacre of a particular ethnic or religious group, usually Jews. 

  • An antisemitic hate crime with a large death toll, irrespective of the number of perpetrators. 

verb
  • To persecute or massacre a particular group of people. 

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