What is the difference between etiquette and ethics in terms of social behavior and moral principles?

Etiquette refers to the customary rules of polite behavior in society, while ethics are the moral principles that guide a person's behavior. Etiquette focuses on social norms and manners, while ethics are concerned with what is right and wrong. In essence, etiquette is about how we should behave in social situations, while ethics is about what is morally right or wrong in our actions.