ethical code vs principle

ethical code and principle both are nouns.

Word	Noun	Adjective	Verb	Adverb
ethical code	Yes	No	No	No
principle	Yes	No	No	No

ethical code (noun)	principle (noun)
a system of principles governing morality and acceptable conduct	a basic truth or law or assumption
	a rule or standard especially of good behavior
	(law) an explanation of the fundamental reasons (especially an explanation of the working of some device in terms of laws of nature)
	a basic generalization that is accepted as true and that can be used as a basis for reasoning or conduct
	a rule or law concerning a natural phenomenon or the function of a complex system
	rule of personal conduct