harmlessness vs nonkilling

harmlessness

noun
  • The characteristic of being harmless; the absence of harm. 

nonkilling

noun
  • Lack of killing; permitting to live. 

  • An action or occurrence other than a direct killing (but possibly having a similar effect). 

  • A precept or worldview that affirms the possibility of a society where killing is absent. 

adj
  • Not engaging in killing. 

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