This is the 7702nd most frequent Portuguese word.
pierre
"Pierre" is not a Portuguese word; it is French and means "stone."
Proper noun: It is used as a person's name in this sentence.
Pierre é o melhor amigo de Ana.
Pierre is Ana's best friend.
Common noun: It is used here to signify a precious stone.
Uma pierre pode ser uma pedra preciosa.
A pierre can be a precious stone.
Material: Pierre refers to the material used for sculpting, meaning stone.