Why is the sport of football also called soccer?

The word “soccer” actually comes from England, where the modern version of the game originated. In England, there were two types of football: rugby football and association football. The slang term for rugby football was “rugger,” and the slang for association football was “assoc.” The word “assoc” gradually evolved into “soccer,” which was much easier to say. When association football was introduced to North America, gridiron football (the type played by the NFL and in the Super Bowl) was already well established. To avoid confusion, Americans adopted the British nickname “soccer” for the new sport.