gallantry vs mettle

gallantry

noun
  • courage 

  • an instance of gallant behaviour or speech 

  • chivalrous courtliness, especially towards women 

mettle

noun
  • A quality of endurance and courage. 

  • Good temperament and character. 

adj
  • Spirited, vigorous, stout-hearted. 

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