chivalry vs humbleness

chivalry

noun
  • The ethical code of the knight prevalent in Medieval Europe, having such primary virtues as mercy towards the poor and oppressed, humility, honour, sacrifice, fear of God, faithfulness, courage and utmost graciousness and courtesy to ladies. 

  • Courtesy, respect and honourable conduct between opponents in wartime. 

  • Courteous behaviour, especially that of men towards women. 

  • A tenure of lands by knightly service. 

humbleness

noun
  • Modesty, humility; the property of being humble. 

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