My website is on football (soccer). I want to target global visitors not only USA visitors. Should I use the word football permanently instead of soccer? or sometimes should I use the word soccer if it is targeted to the USA visitors like "soccer training center" Or should I combine like "football (soccer) jersey" ? I am bit confused, cannot rely on the adwords keyword tool because of football- soccer confusion as football is a completely different game in the USA. Please suggest your advices.