Stock, Broth and Bone Broth—What's the Difference?

When I was in culinary school, I was taught that broth and stock are two different animals: broth is made from vegetables and meat simmered in water, while stock includes vegetables, a little meat, but mostly bones (which are often roasted). But in the years since my graduation, everything seems to have changed. What I think of stock, people call broth; many people (and store-bought carton labels) seem to use the terms interchangeably.