For example, when making a turkey for Thanksgiving, I generally place it in the oven (covered in foil or a turkey bag), and cook it for many hours at the recommended heat setting.

I can crock-pot a "roast" cut of meat for many hours, or put it in the oven (again covered) for several hours at a low temperature.

How is that different from "baking", other than when baking the top is generally not covered?