cruelty vs humanity

cruelty

noun
  • An indifference to suffering or pleasure in inflicting suffering. 

  • A cruel act. 

humanity

noun
  • Any academic subject belonging to the humanities. 

  • The human condition or nature. 

  • The quality of being benevolent; humane traits of character; humane qualities or aspects. 

  • Humankind; human beings as a group. 

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