This is the 65th most frequent Portuguese word.
casa
House; home.
The word 'casa' in this sentence is used in its literal sense, referring to the physical structure or place where one resides.
Eu moro em uma casa grande.
I live in a large house.
Here, 'casa' again refers to the physical location but in the context of an event or activity happening there.
A casa está decorada para a festa.
The house is decorated for the party.
In this sentence, 'casa' extends slightly in meaning to imply a household or home, emphasizing the familial or living aspect rather than just the structure.