In an attempt to define morality we come across two seemingly similar yet distinct definitions. The descriptive definition refers to morality as codes of conduct that are put forth by a certain society, group, or individual, whereas the normative definition refers to morality as a universal code of conduct that should be put forth by all rational persons.
No, cultural relative ethics are also normative. There’s no such thing as ‘descriptive morality’. If an utterance is moral, it’s necessarily normative.