Inspectors in my department tell me a sleeve is something to protect a wire when going through a wall or floor. A raceway is something that goes from j-box to j-box, typically. They also tell me that sleeves don't have to be grounded but raceways do (if they're metal).
Not being an inspector myself, this is just what I have been told (question came up when I was reviewing a building addition a couple of years ago). Please correct me if I am mistaken. I am but a humble urban planner who shares a floor with the electrical inspectors.
