This is the 11843rd most frequent Polish word.
kraju
"Kraju" means "of the country" or "of the land" in English.
'kraju' here refers to the geographical nation-state in a locative usage.
Wisła przepływa przez środek kraju.
The Vistula River flows through the center of the country.
'kraju' here denotes the country as a socio-political entity in a possessive context.
Obywatele kraju decydują o jego przyszłości.
The citizens of the country decide its future.
'kraju' is used to indicate the geographical area of the country in its local locative case.