Violations can be committed both by the offense and the defense. Here are those:

Hockey is a sport that is enjoyed by many players and fans. Because it is most frequently played on ice (professionally anyway), it is often referred to as ice hockey, though there are some variations of the game using a roller rink rather than an ice rink making it possible for those who donít have the benefit of ice rinks to engage in the game for fun. Hockey that isnít played on the ice is generally referred to as roller hockey.