Beef ribs come from the rib section, specifically from the lower part of the ribcage. These are 1-2 ribs thick bone-in, and the meat around the bones is rich and marbled, which makes them perfect for slow-cooking methods that allow the fat to melt and the flavors to develop. They are the entire rib which is 8-10" long. Some call these "brisket on a stick."
Beef short ribs are best when cooked low and slow to allow the collagen in the meat to break down and turn into rich, tender goodness. Here are some popular methods: