This is the 8188th most frequent Portuguese word.
sílvia
"Sílvia" is a given name in Portuguese, equivalent to "Sylvia" in English.
Here, 'Sílvia' is used as a proper noun, referring to a specific person by name.
Sílvia é uma amiga muito querida.
Sílvia is a very dear friend.
In this instance, 'sílvia' is used as a common noun, the name of a plant species, indicating the subject discussed.
Já ouvi falar de uma planta chamada sílvia.
I have heard of a plant called sylvia.
Here, 'sílvia' is mentioned as part of a piece of text or literary context, emphasizing its occurrence as a noun.