This document discusses the differences between ethics and morality, and how their meanings have evolved. It notes that ethics derives from the Greek word for moral character or custom, while morality comes from the Latin word for custom or manner. Both terms now relate to how people act, either in a good or bad way. Morality refers more to moral standards and conduct, while ethics refers to the formal study and analysis of those standards. The two terms can often be used interchangeably.