Castúo is the generic name for the dialects of Spanish spoken in the autonomous community of Extremadura, in Spain. It is not to be confused with Extremaduran, a language between Asturleonese and Castilian, or with Fala, another language spoken in Extremadura that is most similar to Galician-Portuguese.
The Andalusian dialects of Spanish (Spanish: andaluz, pronounced [andaˈluθ], locally [andaˈluh, ændæˈlʊ]) are spoken in Andalusia, Ceuta, Melilla, and Gibraltar. They include perhaps the most distinct of the southern variants of peninsular Spanish, differing in many respects from northern varieties in a number of phonological, morphological and lexical features. Many of these are innovations which, spreading from Andalusia, failed to reach the higher strata of Toledo and Madrid speech and become part of the Peninsular norm of standard Spanish. Andalusian Spanish has historically been stigmatized at a national level, though this appears to have changed in recent decades, and there is evidence that the speech of Seville or the norma sevillana enjoys high prestige within Western Andalusia.
Due to the large population of Andalusia, Andalusian dialects are among the most widely spoken dialects in Spain. Within the Iberian Peninsula, other southern varieties of Spanish share some core elements of Andalusian, mainly in terms of phonetics – notably Extremaduran Spanish and Murcian Spanish as well as, to a lesser degree, Manchegan Spanish.
Extremadurans (Spanish: extremeños, Extremaduran: estremeñus, Portuguese: estremenhos) are the native people of Extremadura, in the central-west of Spain.
The dialect of Extremadura belongs to the southern dialects of Spanish, with strong similarities to the speech from Andalusia or Murcian. However, in northern Extremadura these southern features merge with some Leonese features, forming the Extremaduran language, which is nowadays seriously endangered. In the rest of the territory, the influence of Leonese on the language is marginal.