culpable homicide vs lynching

culpable homicide

noun
  • Homicide which is culpable but does not rise to the level of murder; unlawful killing of a human being which does not constitute murder. 

  • Used other than figuratively or idiomatically: see culpable, homicide. 

lynching

noun
  • Execution of a person by mob action without due process of law, especially by hanging. 

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