The term 'A Set of Moral Principles' can be summarized as 'ETHOS, ' which is a Greek word meaning 'CHARACTER' or 'CUSTOM.' ETHOS is used to refer to the moral principles that guide an individual's behavior and beliefs. It is often used to describe the values and beliefs of a particular culture or society. ETHOS is also used to refer to the moral code of conduct that is expected of individuals within a certain group or organization.