No. 173 in Polish
czym
The Polish word "czym" means "what" or "with what" and is used as an instrumental case form of "co."
In a sentence
Czym zajmujesz się na co dzień?
What do you do daily?
The word 'czym' is used as an instrumental case form of the pronoun that means 'what', acting as an interrogative word asking about the subject of activity.
Nie wiem, czym on się kierował, podejmując tę decyzję.
I don't know what guided him in making this decision.
'Czym' is utilized here to indicate the means or reason behind the action, derived from 'co' (what) in the instrumental case.
Czym różni się ten produkt od tamtego?
How does this product differ from that one?
Here, 'czym' is part of a question comparing two entities, again taking the instrumental case form of 'co' to specify the means or object of comparison.
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