structural:summarization, structural:scholar_edition
Classification and related languages

Portuguese belongs to the West Iberian branch of the Romance languages, and it has special ties with the following members of this group:

Portuguese and other Romance languages (namely French and Italian) share considerable similarities in both vocabulary and grammar. Portuguese speakers will usually need some formal study before attaining strong comprehension in those Romance languages, and vice versa. However, Portuguese and Galician are fully mutually intelligible, and Spanish is considerably intelligible for lusophones, owing to their genealogical proximity and shared genealogical history as West Iberian (Ibero-Romance languages), historical contact between speakers and mutual influence, shared areal features as well as modern lexical, structural, and grammatical similarity (89%) between them.

Portuñol /Portunhol, a form of code-switching, has a more lively use and is more readily mentioned in popular culture in South America. Said code-switching is not to be confused with the Portuñol spoken on the borders of Brazil with Uruguay (dialeto do pampa) and Paraguay (dialeto dos brasiguaios), and of Portugal with Spain (barranquenho), that are Portuguese dialects spoken natively by thousands of people, which have been heavily influenced by Spanish.

Portuguese and Spanish are the only Ibero-Romance languages, and perhaps the only Romance languages with such thriving inter-language forms, in which visible and lively bilingual contact dialects and code-switching have formed, in which functional bilingual communication is achieved through attempting an approximation to the target foreign language (known as 'Portuñol') without a learned acquisition process, but nevertheless facilitates communication. There is an emerging literature focused on such phenomena (including informal attempts of standardization of the linguistic continua and their usage).