In pursuit of something quite different, I came across the following.
In New Zealand and Australia, “soccer” has been the most common usage since the early part of the twentieth century. In 2005, the game was relaunched in Australia as “football” and the nickname for the national side, the “Socceroos” was expected (by the relevant bureaucrats, of course) to fade away. Naturally, that hasn’t happened, and the nickname is once more appearing on official websites, merchandize and so on. In May 2007, the governing body of New Zealand football, “New Zealand Soccer”, was renamed “New Zealand Football.”
In the United States, however.. the “US Football Association” didn’t include the word “Soccer” in its title until 1945, and didn’t drop the “Football” until 1974. Early US associations overwhelmingly used “Football” e.g. the American League of Professional Football, which was founded in 1894. Some regional leagues did use “Soccer” before World War II.
(This came about as a result of musing over how Commonwealth countries picked up some of our sporting inventions – cricket, rugby, tennis – but it was south and central Europe and America that picked up football. There’s no single answer to why this should be, although it evidently is. Football was actually quite a late developer – recognisable rugby had a 10-20 year head start, and cricket much more: the sports picked up by Commonwealth countries seem to relate to what was popular in Britain at the time of first colonization. And, football seems to have favoured areas experiencing the growth of heavy industry and mining specifically).