Spanish language
In Spain and in some other parts of the Spanish-speaking world, Spanish is called not only (Spanish) but also (Castilian), the language from the kingdom of Castile, contrasting it with other languages spoken in Spain such as Galician, Basque, Asturian, Catalan, Aragonese and Occitan.
Salvadoran Spanish
Salvadoran Spanish is geographically defined as the form of Spanish spoken in the country of El Salvador. The Spanish dialect in El Salvador shares many similarities to that of its neighbors in the region, but it has its stark differences in pronunciation and usage. Salvadoran Spanish is the only Spanish dialect in North America to be usually called "castellano", instead of "español". El Salvador, like most of Central America, uses voseo Spanish as its written and spoken form, similar to that of Argentina. Vos is used, but many Salvadorans understand tuteo. Vos can be heard in television programs and can be seen in written form in publications. "Usted" is used as a show of respect, when someone is speaking to an elderly person.