Soccer (European football) and American football
who are you
Null Empty set- Singleton set-
Yes. There is competition, football, and basketball.~EA
Football, basketball, etc...
I wasn't aware there are different kinds? But if you mean American/English football they play English football.
Wikipedia has a good article on the subject - see related link.
There are many different college football helmets which contain different designs. There are designs which contain things such as visors or other unique features.
a person who plays the sport of football
It is the act of managing something, for example a business, group, troop, different kinds of individuals etc.
There are two different kinds of football. One is soccer and one is.. well.. football. I think that the soccer football would be more famous in Spain or Africa. Football overall is more a USA and Canadian sport.
sqare
why are different kinds of plants have different kinds of roots