This is the 14763rd most frequent Polish word.
quady
"Quady" in Polish means "ATVs" (All-Terrain Vehicles).
The word 'quady' here is used in its instrumental plural form to indicate a type of vehicle (quad bikes) in a recreational activity.
Lubię jeździć na quadach po lasach.
I like riding quad bikes through forests.
The word 'quady' is in its genitive plural form here, used to describe a specific presence of quad bikes.
Widziałem kilka quadów zaparkowanych przed sklepem.
I saw a few quad bikes parked in front of the store.
In this sentence, 'quady' is used in its accusative plural form to indicate the object (quad bikes) that was purchased.