This is the 9180th most frequent Portuguese word.
cachoeiras
Waterfalls.
The word 'cachoeiras' is used here in its plural form, referring to multiple waterfalls, as a subject described for their qualities.
As cachoeiras no Brasil são famosas pela sua beleza natural.
The waterfalls in Brazil are famous for their natural beauty.
In this sentence, 'cachoeiras' appears inquired about their existence, serving as the subject of the hypothetical statement.
Será que existem cachoeiras perto daqui?
Are there waterfalls near here?
Here, 'cachoeiras' functions as the direct object of the verb 'visitar', indicating the activity of visiting.