dismal vs stonehearted

dismal

adj
  • Depressing, dreary, cheerless. 

  • Causing despair; gloomy and bleak. 

  • Disastrous, calamitous 

  • Disappointingly inadequate. 

stonehearted

adj
  • Hardhearted; pitiless; unfeeling. 

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