benevolent vs callous

benevolent

adj
  • Possessing or manifesting love for mankind. 

  • Having a disposition to do good. 

  • Altruistic, charitable, good, just and fair. 

callous

adj
  • Having calluses, or relating to calluses. 

  • Emotionally hardened; unfeeling and indifferent to the suffering/feelings of others. 

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