This is the 14673rd most frequent Polish word.
próbka
Sample.
In this sentence, 'próbka' is used to mean 'sample', referring to a specific portion taken from a larger quantity for the purpose of analysis.
W laboratorium analizujemy próbkę wody.
In the laboratory, we analyze a water sample.
Here, 'próbki' (plural of 'próbka') refers to items given for evaluation or as representations of a broader collection, often in a promotional context.
Proszę przyjąć nasze próbki jako gest uprzejmości.
Please accept our samples as a gesture of goodwill.
In this sentence, 'próbka' denotes a small amount of paint used to demonstrate its color or consistency before broader application.