chivalry vs courtesy

chivalry and courtesy both are nouns.

Word	Noun	Adjective	Verb	Adverb
chivalry	Yes	No	No	No
courtesy	Yes	No	No	No

As nouns, courtesy is a hypernym of chivalry; that is, courtesy is a word with a broader meaning than chivalry:

Other hypernyms of chivalry include good manners.

chivalry (noun)	courtesy (noun)
courtesy towards women	a courteous or respectful or considerate act
the medieval principles governing knighthood and knightly conduct	a courteous manner
	a courteous or respectful or considerate remark