The American English vocabulary we know and love today originally came from England, and neighboring European countries that learned King’s English. But there is still a monumental amount of difference between terms used in the U.K, and the ones used in western culture. If you look at some of them, you’ll see they could cause misunderstandings, and create embarrassing situations. They will also make a writer look like a complete idiot when trying to interpret King’s English and put it into their story. If you’re a writer, it’s a good idea to know these terms, so that you don’t use them incorrectly whenever introducing a British character or setting.