This is the 982nd most frequent Portuguese word.
chave
Key.
In this sentence, the word 'chave' refers to a physical key for unlocking a door, showcasing its literal meaning.
Ele me entregou uma chave para abrir a porta.
He handed me a key to open the door.
Here, 'chave' is used metaphorically to signify something crucial or essential, demonstrating its figurative usage.
A educação é a chave para o sucesso.
Education is the key to success.
In this example, 'chave' modifies 'solução', indicating a significant or primary attribute, thus used as an adjective.