Rugby is a sport that can be divided into two categories: professional and amateur. professional football games are usually played in professional stadiums, and the players are professional players. amateur rugby games are divided into two types: campus and community. the venue is usually a school or community sports field, and the players are mainly students or community residents. in addition, rugby can also be divided into seven-a-side and fifteen-a-side competitions, and the rules and game time are different.