Castilian/Castellano already carries a distinct name. But just to complicate the matter, “Castellano” is also used in South America. https://en.wikipedia.org/

Castilian/Castellano already carries a distinct name. But just to complicate the matter, “Castellano” is also used in South America. https://en.wikipedia.org/wiki/Name_of_the_Spanish_language https://en.wikipedia.org/wiki/Name_of_the_Spanish_language