A brief explanation of the differences between arguments (premise > conclusion) and explanations (explanans > explanandum).
Cultural Relativism: says cultures disagree.
Cultural Moral Relativism: says that cultures are the standard for good/bad, right/wrong.
Normative statements: are centrally value judgments. Descriptive statements: are any other statements. Are normative statements JUST opinions? I ask you to resist the urge to think of them in that way. I'll say more later on why.