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.
Barcelona
Spanish is the most spoken language in Barcelona (according to the linguistic census held by the Government of Catalonia in 2013) and it is understood almost universally. After Spanish, the Catalan language is the second most spoken one in the city, and it is understood by 95% of the population, while 72.3% can speak it, 79% can read it, and 53% can write it, thanks to the language immersion educational system.