honor system vs system of rules

honor system and system of rules both are nouns.

Word	Noun	Adjective	Verb	Adverb
honor system	Yes	No	No	No
system of rules	Yes	No	No	No

As nouns, system of rules is a hypernym of honor system; that is, system of rules is a word with a broader meaning than honor system:

honor system: a system of conduct in which participants are trusted not to take unfair advantage of others
system of rules: a complex of methods or rules governing behavior

Other hypernyms of honor system include system.

honor system (noun)	system of rules (noun)
a system of conduct in which participants are trusted not to take unfair advantage of others	a complex of methods or rules governing behavior