gritty vs lionhearted

gritty

adj
  • Spirited; resolute; unyielding. 

  • Containing sand or grit; consisting of grit; caused by grit; full of hard particles. 

  • Intense and starkly realistic; depicting harsh reality, especially violence. 

lionhearted

adj
  • Brave, courageous. 

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