This is the 1784th most frequent Polish word.
wystawę
"Exhibition."
Here, 'wystawę' refers to an exhibition as a noun in the accusative case.
Odwiedziliśmy wystawę sztuki nowoczesnej w muzeum.
We visited the modern art exhibition at the museum.
In this sentence, 'wystawę' represents an exhibition being organized, again in the accusative case.
Przygotowujemy wystawę dla lokalnych artystów.
We are preparing an exhibition for local artists.
The word 'wystawa' (the nominative form of 'wystawę') is being referred to in a question about a gallery's exhibition.