bloodletting vs injury

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. 

injury

noun
  • Damage to the body of a living thing. 

  • The violation of a person's reputation, rights, property, or interests. 

  • Other forms of damage sustained by a living thing, e.g. psychologically. 

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