Moral principles are the standards of behavior that guide an individual's actions and decisions. The term 'moral principles' is often used interchangeably with 'ETHICS, ' which is derived from the Greek word 'ETHOS' and refers to a set of moral principles or values. SCRUPLES are a set of moral principles that are based on conscience and a sense of right and wrong. All three terms refer to the same concept, which is the idea of having a code of conduct that guides one's behavior.