Metaethics:Metaethics is the study of the fundamental nature and meaning of ethical claims, investigating questions about the metaphysical, epistemological, and semantic status of moral judgments.
Moral Theory: A moral theory is a systematic framework of principles, rules, and guidelines that provides a basis for making moral judgments and evaluating the rightness or wrongness of actions.
Moral Relativism:Moral relativism is the view that moral judgments are relative to the individual, culture, or historical context, rather than being absolute or universal.