A plant planter and a pot are often used interchangeably but there are several differences that distinguish a pot from a planter. It is important that you are aware of these differences so you will definitely know what it is that you are looking for. This includes their shape. Most plant pots are round in shape while planters appear to be rectangular. In addition, pots usually hold a single plant while the planter is often used for several plants. There are planters that feature sections or compartments.