This is the 1046th most frequent Portuguese word.
iguaçu
"Iguaçu" refers to a river in southern Brazil, known for the Iguaçu Falls, one of the world's largest and most famous waterfalls.
The word 'Iguaçu' in this sentence refers to the famous waterfalls located on the border between Brazil and Argentina.
Eu visitei as Cataratas do Iguaçu durante minhas férias.
I visited the Iguaçu Falls during my vacation.
Here, 'Iguaçu' denotes the name of the river from which the falls derive.
O Rio Iguaçu é um dos mais importantes da região.
The Iguaçu River is one of the most important in the region.
In this case, 'Iguaçu' identifies the national park that encompasses the area around the falls and the river.