This is the 4970th most frequent Catalan word.
vostra
"Vostra" means "your" in English (feminine singular possessive).
In this sentence, 'vostra' is used as a possessive adjective indicating the house belongs to the person(s) being addressed.
On és la vostra casa?
Where is your house?
Here, 'vostra' serves as a possessive adjective referring to the opinion expressed by the addressee(s).
He escoltat la vostra opinió.
I have listened to your opinion.
In this example, 'vostra' is used as a possessive adjective describing the question posed by the interlocutor(s).