Is there a difference between Stew and Casserole?
Is there some dialectical thing going on here? I have always known stews as stovetop and casseroles as baked, just as Jared said in his comment. See for example on wikipedia: stew vs. casserole; or in Merriam-Webster: stew (click the verb form) vs. casserole. (Casserole refers to the dish as well as the food cooked in it; it's pretty definitely something you would only bake in.)

Now and then I see things get muddled when I'm reading recipes, but these are definitely the meanings I grew up with and see in the vast majority of what I read.