courtly love vs code of conduct

courtly love and code of conduct both are nouns.

Word	Noun	Adjective	Verb	Adverb
courtly love	Yes	No	No	No
code of conduct	Yes	No	No	No

As nouns, code of conduct is a hypernym of courtly love; that is, code of conduct is a word with a broader meaning than courtly love:

courtly love: (Middle Ages) a highly conventionalized code of conduct for lovers
code of conduct: a set of conventional principles and expectations that are considered binding on any person who is a member of a particular group

Other hypernyms of courtly love include code of behavior.

courtly love (noun)	code of conduct (noun)
(Middle Ages) a highly conventionalized code of conduct for lovers	a set of conventional principles and expectations that are considered binding on any person who is a member of a particular group