Polish sausage, also known as kielbasa, is a type of smoked sausage originating from Central and Eastern Europe. The main difference between Polish sausage and kielbasa lies in the seasoning used to flavor them. Polish sausages typically contain garlic, marjoram and other spices while kielbasa usually uses pepper or paprika for a spicier taste. Additionally, Polish sausages are usually served cooked whereas Kielbasas can be eaten raw or cooked depending on preference. Lastly, there are several different varieties of both types of sausages with varying sizes, textures and flavors so it ultimately comes down to personal preference when selecting either one!