Although only two of the five known ranks were referred to as "bone" (골, 骨), the term "bone rank" has become widely used to describe the whole system.
Meskipun hanya dua dari lima ranking yang dikenal yang disebut sebagai "tulang" (골, 骨), kondisi "ranking tulang" telah menjadi luas dipergunakan untuk mendeskripsikan seluruh sistem.