Word soccer dates back to England, shortly after the Laws of the Game were written and Football Association was formed, in 1863, London.
Over the next few years, English people shortened the Football Association into Assoccer for short, and pretty quickly Assoccer was shortened even more to be called simply Soccer.
Legend has it that Charles Wredford Brown, an Oxford student during the time of first Football Association, was the first person to use the word Soccer.
When friends asked him if he’d come play a game of Rugger (nickname for Rugby), to which Charles replied he preferred to play Soccer instead.