moral principle vs ethic

moral principle and ethic both are nouns.

Word	Noun	Adjective	Verb	Adverb
moral principle	Yes	No	No	No
ethic	Yes	No	No	No

As nouns, moral principle and ethic are synonyms defined as:

moral principle and ethic: the principles of right and wrong that are accepted by an individual or a social group

Other synonyms of moral principle include value-system, value orientation.

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