frigid vs stonehearted

frigid

adj
  • Chilly in manner; lacking affection or zeal; impassive. 

  • Sexually unresponsive, especially of a woman. 

  • Very cold; lacking warmth; icy. 

stonehearted

adj
  • Hardhearted; pitiless; unfeeling. 

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