lull vs nonviolence

lull

noun
  • A period of rest or soothing. 

  • A period without waves or wind. 

  • An extended pause between sets of waves. 

  • A period of reduced activity; a respite 

verb
  • To cause to rest by soothing influences; to compose; to calm 

  • To become gradually calm; to subside; to cease or abate. 

nonviolence

noun
  • A philosophy that rejects the use of violence, and instead seeks to bring about change through peaceful responses even to violent acts. 

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