I heard this recently, but don't know if it was from a post here or not. If so, sorry for stealing someone else's thunder!
Morals are how society rates right and wrong...and this sense of morality can change depending on the society.
Ethics is what is always right or wrong, no matter the societal context.
I think that's good to think about. It gives us a perspective and a vocabulary to discuss the fine line between the two...especially when religiosity seeks to blur the boundary!
...just a thought. Interesting discussion, though!