Languages of Catalonia
According to the government of Catalonia, Spanish, locally known as Castilian, is currently the most spoken language in Catalonia (45.9% daily users of Spanish vs. 35.6% daily users of Catalan vs. 11% daily users of both Spanish and Catalan) and especially in the Barcelona metropolitan area, as well as native language and usual language of many Catalan citizens. This language is widely prevalent in the press, cinema and in daily life.
Caló language
Caló (; ; ; ) is a language spoken by the Spanish and Portuguese Romani. It is a mixed language (referred to as a Para-Romani language in Romani linguistics) based on Romance grammar, with an adstratum of Romani lexical items through language shift by the Romani community. It is often used as an argot, a secret language for discreet communication amongst Iberian Romani. Catalan, Galician, Portuguese, and Spanish are closely related varieties that share a common root.