Why is it called soccer instead of football?

Here is the part that surprises most people: "soccer" was never an American invention. In 1860s England, schools and clubs were playing competing versions of football, so in 1863 they founded the Football Association to settle on one set of rules. That version became "association football," to tell it apart from "rugby football." British students loved clipping words and tacking on "-er" (rugby became "rugger"), and "association" got squeezed down to "soccer." For decades, Brits used both words happily.

So why the split today? When the sport crossed the Atlantic, America already had its own game called football, the helmet-and-tackle one. "Soccer" was a tidy way to keep the two from getting confused, so it stuck here. Meanwhile, back in Britain, "soccer" slowly fell out of fashion and came to sound vaguely American, so the English doubled down on "football" and quietly dropped the word they had coined.

The thing that trips up newcomers: people sometimes treat "soccer" as a badge of American ignorance, when it is really just an old British nickname that survived in one country and faded in another. Both words are correct, both describe the exact same sport, and you will hear "soccer" used in places like Canada, Australia, and Ireland too, all spots that needed to distinguish it from a rival "football."