aggression vs kindness

aggression

noun
  • Hostile or destructive behavior or actions. 

  • The practice or habit of launching attacks. 

  • The act of initiating hostilities or invasion. 

kindness

noun
  • The state of being kind. 

  • An instance of kind or charitable behaviour. 

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