Not all burgers are beef, yea turkey burgers are a thing here. But it is different from the turkey sandwich, and you wouldn't call one of those a burger.
Burgers are a subset of sandwiches, so while you can call burgers sandwiches, you can't do the reverse. Dogs are animals, but the words aren't interchangeable.
You could lump turkey burgers in like OP did by calling them, and a bunch of things sandwiches as a group, but I don't think you'd call turkey burgers a sandwich otherwise (because the turkey sandwich is a separate, already existing thing)
Not all burgers are beef, yea turkey burgers are a thing here. But it is different from the turkey sandwich, and you wouldn't call one of those a burger.
Burgers are a subset of sandwiches, so while you can call burgers sandwiches, you can't do the reverse. Dogs are animals, but the words aren't interchangeable.
You could lump turkey burgers in like OP did by calling them, and a bunch of things sandwiches as a group, but I don't think you'd call turkey burgers a sandwich otherwise (because the turkey sandwich is a separate, already existing thing)