principle vs ethical code

principle and ethical code both are nouns.

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

principle (noun)	ethical code (noun)
a basic truth or law or assumption	a system of principles governing morality and acceptable conduct
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