Some places eat rice. Others prefer bread. Or dumplings (but not necessarily stuffed - like Eastern Europe). Or noodles, which themselves can be made from all kinds of things and are somehow different between Asian noodles and Italian pasta. Or cous cous. Or potato. Or... Or...

We have a ton of different carbs in this world. Some take more preparation than others when they get on the plate. That doesn't mean we're comparing apples and oranges (which, ironically, would actually be a great map as well)