Fundamentally, most countries who play their own nationally-invented football codes call association football by the name of "soccer". This, of course, is to differentiate the football sports in common everyday language usage among the people - so that the local game is favoured by the term "football".
Almost all, if not all other countries in the world other than the US and parts of Canada, Australia and South Africa, call the game "football". Since very recent times, the governing bodies in Australia and South Africa are called Football Associations, but the sport is referred to as "soccer" by the vast majority in these nations.