stonehearted vs surly

stonehearted

adj

  • Hardhearted; pitiless; unfeeling. 

surly

adj

  • Irritated, bad-tempered, unfriendly. 

  • Threatening, menacing, gloomy. 

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