This is the 4227th most frequent Portuguese word.
viana
"Viana" is a town and municipality name in Portugal and Angola; it can also refer to "Viana do Castelo," a city in Portugal.
In this sentence, 'Viana' refers to a proper noun, specifically the name of a city.
Viana é uma cidade linda no norte de Portugal.
Viana is a beautiful city in the north of Portugal.
Here, 'viana' describes a type of fabric known for its artisanal characteristics.
Comprei uma camisa feita de tecido viana.
I bought a shirt made of Viana fabric.
In this context, 'Viana' is a person's proper name.