The term 'snow BOARD' can be broken down into two words: 'SKI' and 'BOARD'. Skiing is a popular winter sport in which participants use skis to glide over snow-covered terrain. A snowboard is a type of BOARD used for sliding down snowy slopes. It is similar to a SKI, but has a wider surface area and is usually ridden with both feet facing forward. Snowboarding is a popular winter sport that has become increasingly popular in recent years.