A winter sport is a sport commonly played during winter. As a formal term, it refers to a sport played on snow or ice, but informally it can refer to sports played in winter that are also played year-round, such as basketball. The main winter sports are ice hockey and figure skating, sledding events such as luge, skeleton, and bobsleigh, skiing (Alpine and Nordic) and snowboarding. Other common winter sports include snow-blading, monoskiing, skwal and tobogganing.