This is the 16401st most frequent Polish word.
warstwa
Layer.
In this sentence, 'warstwa' is used to describe a layer as a physical stratum of cream.
Na torcie widnieje warstwa kremu.
There is a layer of cream on the cake.
Here, 'warstwa' refers to a conceptual layer of the atmosphere, illustrating its application in scientific contexts.
Otrzymali instruktora w przyrządach, które wtrącono w obrębie warstwy atmosfery.
They received an instructor in instruments that were inset within the layer of the atmosphere.
'Warstwa' in this case is used to describe a societal class, showing its metaphorical and abstract usage.