rio

rio

The Russian word "рио" (rio) is typically a transliteration of "Rio," referring to Rio de Janeiro, a city in Brazil.

In this sentence, 'Рио' refers to the famous city 'Rio de Janeiro', used as a proper noun.

Я мечтаю посетить Рио-де-Жанейро.

I dream of visiting Rio de Janeiro.

Here, 'Рио' is a proper noun shorthand for 'Rio de Janeiro', referring to the location where the filming occurred.

Этот фильм сняли в Рио.

This movie was filmed in Rio.

In this sentence, 'Рио' is presented as a common noun borrowed from Spanish or Portuguese, where 'Rio' means 'river', indicating its hydrological context.

Рио — это река, которая протекает в Южной Америке.

A rio is a river that flows in South America.