I've redefined Ethics for my own purposes, as being the study of responsible behavior in a society, setting an example for others in one's own behavior, and personally establishing a precedent or exception in some cases. The issues of Ethics in this light become clearly distinct from the issues raised in Morals, as Ethics concerns itself with effects upon a larger society and group dynamics, while I hold that Morals concerns itself with the immediate impact of an action, taken in isolation.
Morals: Have I done harm to another's interests or welfare, regardless of whether this act ever becomes disclosed or public?
Ethics: If this act, moral or immoral, were to become a matter of public knowledge, would it harm certain public trusts and understandings? Would the public harmony be disrupted by the perception or knowledge of such an act?