According to the Wiki (also in portuguese) a hamlet consists of no more than 100 - 200 inhabitants, that means typically about 20 to 50 houses.
The next settlement Barrocas e.g. is of that type.
Another additional criteria is the presence of a sort of centre with denser population and some residential streets.
In Capelas that would be around the crossing of Rua Principal and Rua dos Aliados.

But the distinguishing between hamlet and village is of course neverwhere exact.