Historically there was a distinction between morality and ethics. Morality was the study of the mores (mawr-eyz) of people—how, in fact, people behave in a given society or a given culture. Where ethics sought the ethos, the transcendent standards or norms for human behavior. In simple terms it is this: Morality looks at the verb is—this is what is; ethics looks at the word ought.
— R. C. Sproul, from The Truth Project, Lesson 2 at 48:25