Carved & Flat Top Bodies
Carved Top Bodies
Carved Top is as the name implies; the top is indeed carved in a shape other than flat and the carve itself varies per body style. Most times this also involves caving a 5/8" thick laminate top that has been glued to the body's back wood.
Flat Top Bodies
This simple means that the top is flat other than the sometimes present forearm contour. Laminate tops on these bodies are the standard 1/8" thickness.