Baseboard, Casing and Crown Molding
Baseboard is usually from wood, stone or any other material that runs at the lower part of the wall and comes in variety of profiles. The height of the baseboard is usually 7% of the room height.
Casing is usually around doors and windows. The height of casing is about 50% of the baseboard.
Crown molding is running at the upper part of the wall, where it meets the ceiling. The height of it is between casing and baseboard.