It is quaint to note that, presumably owing to football having a different meaning in USA than in the rest of the world, the authors (had to) use the slangword "soccer" to describe the beautiful game and the world's most common sport in their article -- excpet for in the header of the critical histogram ,which has "Football" in its title.
After all, "soccer" is slang or colloqialism for the sport the world knows as "football" in all its forms in different languages, whether it be "fotboll" or "Fussball" or "fútbol".
What next? The "FA Cup Final" to be renamed the "SA Cup Final" with all that connotates? "Total Footbal" to be called "Complete Soccer"?
In future let us call them Football and American Football.
