They are not used interchangeably in the US, people might call a burger a sandwich, but would never call a (non burger) sandwich (like a grilled cheese, tuna fish sandwich, etc) a burger.
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)
americans tend to use burger and sandwich interchangeably, unsure why/when it started but it at least seems to be a US-centric phenomenon
They are not used interchangeably in the US, people might call a burger a sandwich, but would never call a (non burger) sandwich (like a grilled cheese, tuna fish sandwich, etc) a burger.
Turkey burger?
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)
I feel like we only call them turkey burgers because of American humor rather than anyone genuinely feeling like it’s a burger.
Let's just compromise and call them "turgers".
I’m going to give a respectful no
Smh the left is so divisive.
Yeah it's very interesting, I never noticed before.
Not exactly interchangeably, except maybe in some dialects people might use the word sandwich a bit more liberally.