Here’s the honest truth: in casual conversation, people use the terms interchangeably. If you tell a butcher you want a prime rib for Christmas, they’ll hand you a rib roast. If you order a rib roast at a steakhouse, they’ll serve you prime rib. It’s a linguistic loophole.
But if you want to be a total kitchen nerd (and I vote yes), remember this: rib roast = the canvas, prime rib = the painting. One is potential, the other is glory.
So yes, they are the same beast—but one wears a tuxedo and carries a glass of wine. The other just shows up in its birthday suit, ready for action.
