The terms are often used interchangeably and are more or less the same thing. However, there are some primary differences. For instance, all crock pots are made with a ceramic or porcelain pot that sits inside a heating unit. Meanwhile, slow cookers are metal pots that sit on top of a heating unit. In addition, most crock pots have just two settings (low and high) while many slow cookers offer a wide variety of settings and temperatures to cook and warm your food.