This is the 8599th most frequent Polish word.
przyczyna
Cause; reason.
Here, 'przyczyna' is used as a noun to refer to the reason or cause behind an event (the accident).
Przyczyną wypadku była nieuwaga kierowcy.
The cause of the accident was the driver's inattentiveness.
In this sentence, 'przyczyna' is again a noun, describing the underlying reason or explanation for an issue (the error).
Nie mogę znaleźć przyczyny tego błędu.
I can't find the cause of this error.
Here, 'przyczyna' is used in a general sense to describe causal relationships, emphasizing the concept of cause and effect.