Prime rib is roasted whole with the bone in, whereas rib roast sometimes refers to the general cut of meat that's subdivided into ribeye steaks, which can be boneless. As is often the case ...
Both prime rib and rib eye roasts are primal cuts of beef; prime rib, aka standing rib roast, is a larger, bone-in cut that includes the rib eye, whereas the smaller rib eye roast can be purchased ...