This is very informative, but I am still confused. The store where I work sells a brand name of sausage, very well known sausage maker in USA. The varieties include pork and beef or just pork or beef. The confusing part is that these are all called polish sausage, but only one is called kielbasa. I came here to find out the what makes kielbasas different from the other polish sausages by the same manufacturer.
What I have learned is that kielbasa is the word for all polish sausages, and should be followed by another word to describe what kind. This does not happen by this brand maker. Instead, they are all polish sausages, and one is called kielbasas. Is there something I have misunderstood here?