Sure, US vs. UK English has this as well, in things like "fanny", "boot", "chip", etc.
But a key difference here is that NK and SK are separated by a fence, not by 2,000 miles of ocean.
British English is quickly becoming Americanized… (at least according to my results a few years back https://arxiv.org/abs/1707.00781v1)
British English is quickly becoming Americanized… (at least according to my results a few years back https://arxiv.org/abs/1707.00781v1)