This is the 2278th most frequent Portuguese word.
aérea
"Aérea" means "related to the air or aviation."
Here, 'aérea' is used as an adjective describing 'companhia' (company), indicating that this company operates in air transportation.
A companhia aérea oferece voos para o mundo inteiro.
The airline offers flights around the world.
In this example, 'aérea' modifies 'visão' (view) to specify that the view is from above, from the air.
A visão aérea da cidade era espetacular.
The aerial view of the city was spectacular.
Here, 'aérea' describes 'fotografia' (photography), showing the specific type of photography related to capturing images from the air.