Japanese Mahjong (Japanese: 麻雀, 麻将 or マージャン; mājan), also known as riichi mahjong, is a variation of mahjong. While the basic rules to the game are retained, the variation features a unique set of rules such as riichi and the use of dora. The main mahjong article contains general terms, but only English and Japanese terms are used here. Terms like "chow," "pung," and "kong" are not used in this variation, yet their calling functions are still used. In those circumstances, they are referred to in Japanese as chii, pon, and kan.