This is the 5732nd most frequent Portuguese word.
angra
A small bay or cove.
Here, 'Angra' is used as a proper noun referring to a specific location, which is Angra dos Reis.
A cidade turística de Angra dos Reis é famosa por suas praias.
The tourist city of Angra dos Reis is famous for its beaches.
The word 'angra' in this context is used as a common noun meaning 'cove', describing a small sheltered bay.
Encontramos uma pequena angra perfeita para nadar.
We found a small cove perfect for swimming.
In this sentence, 'angra' is used as a common noun, again referring to a geographic feature such as a cove or inlet.