While both refer to unlawfully causing the death of another human being, murder implies malicious intent and premeditation, what lawyers call malice aforethought. Examples of
…manslaughter might include when someone falls to their death because somebody forgot to barricade a hazardous area, or when the mishandling of hazardous material causes somebody's death. People guilty of manslaughter didn't intend any harm; they were just negligent, not providing extra care to a situation where extra care was called for. I've never studied law, but I think that's the gist of it. (MORE) 
