brutality vs serenity

brutality

noun
  • The state of being brutal. 

  • A cruel or savage act. 

  • The use of excessive physical force, often in the form of violence. 

serenity

noun
  • A lack of agitation or disturbance. 

  • The state of being serene; calmness; peacefulness. 

  • A title given to a reigning prince or similar dignitary. 

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