This is the 10726th most frequent Portuguese word.
helicópteros
Helicópteros: Helicopters.
In this sentence, 'helicópteros' is used as the subject of the verb, referring to the vehicles performing the action.
Os helicópteros sobrevoaram a cidade durante a manhã.
The helicopters flew over the city in the morning.
Here, 'helicópteros' appears as a plural noun describing the type of vehicle being the topic of the project.
O engenheiro trabalha em um projeto de helicópteros militares.
The engineer works on a project about military helicopters.
In this context, 'helicópteros' is used to denote a category, indicating the variety available.