Spectator sports can be either professional or amateur. Association football, basketball, cricket, tennis, rugby, golf, athletics, and volleyball are among the most popular spectator and participant sports. Less popular sports, such as hunting, are primarily participant sports. Spectator sports involve two teams of players who compete against each other while the audience watches. The audience gets to choose which team it supports by showing its enthusiasm through applause and shouting commands to the players. In general, spectator sports are divided into two categories: contact and non-contact. Contact sports include football, baseball, rugby, ice hockey, and handball. In these games, players use their hands or arms to hit or touch the ball or stick. Non-contact sports include tennis, soccer, indoor soccer, lacrosse, and bowling. In these games, players use their feet or legs to kick, shoot, throw, or roll balls or pins. Contact sports are more dangerous than non-contact sports because there is a chance that players may get injured during the game. For example, someone may get hit in the head with a ball or stick or slip on wet ground. They may also get hurt if they fall down stairs, off ramps, or onto pavement from a high height. Non-contact sports can also be dangerous if a player is not careful where he or she steps.