ethic vs ethical code

ethic and ethical code both are nouns.

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

As nouns, ethic and ethical code are synonyms defined as:

ethic and ethical code: a system of principles governing morality and acceptable conduct

ethic (noun)	ethical code (noun)
the principles of right and wrong that are accepted by an individual or a social group	a system of principles governing morality and acceptable conduct
a system of principles governing morality and acceptable conduct