With "Pot Shape" I mainly mean Pot Billiards. These pipes are featured by a shorter bowl.
But we can find a "Pot" in many other shapes; we can find a Canadian Pot, a Lovat Pot, a Bent Pot: all these pipes have a short bowl.
It could be found with a lightly bent shank, with a taper or saddled mouthpiece. The Army mount style is also available.
Castello developed, beside to the classical Billiard Pot, an original shape, the #55 which is well know as the "Pot by Castello". The pipe is a 1/16 bent with a Pot bowl featured by very thick walls.

CONNECTED SHAPES

The basical shape is the Straight Classical Billiard, with cylindrical bowl and round shank.