They can, but most people will initially think they are talking about American Football when they do.
Only Americans call soccer...soccer! (everywhere else it is known as football)
Americans call soccer soccer, and football football!
Fútbol. What Americans call soccer.
soccer
football......what you Americans call soccer
Football (the americans call it soccer !)
Football, which is equivalent to what North Americans call "soccer."
Football (Americans call it soccer) as well as Cricket.
Football or as the Americans call it soccer. In German it is "Fußball"
American football and what the world calls football which Americans call soccer
In the American dialect of the English language "football" is one sport, "soccer" is another. In the British dialect of the English language, the sport the Americans call "soccer" is called "football" they do not play much American Football in Britain.
in the UK football (what Americans call soccer) is the most popular sport