Castellano is one dialect of the Spanish language. It originates from Castile and is the official Spanish language. Inside Spain, the word castellano is used to distinguish that form of Spanish language from other forms such as Aragonese, Leonese, Asturian, Galician, Extremaduran, Catalan and Occitan. It also distinguishes the recognizable Spanish pronunciations from varieties of Latin American Spanish. Outside Spain, castellano is simply known as español (Spanish).