Crown Mouldings are used as a transitional piece from the top of the cabinet to the ceiling. It helps hide minor defects that naturally occur on the ceiling, such as cracks and discoloration of paint. Crown moulding designs are curved and/or angular, which gives a decorative finishing touch for your home and makes the ceiling feel higher.
Baseboards are used for the bottom of the wall. The designs are usually flat and sometimes have a small decorative design on them. Baseboards are used over the joint between the wall surface and floor, covering the uneven edges.