This is the 1489th most frequent Polish word.
malborku
"Malborku" is the locative or dative case of "Malbork," meaning "in Malbork" or "to Malbork," referring to the town of Malbork in Poland.
Here, 'Malborku' is used in the locative case to indicate the location of the event or object.
W Malborku znajduje się jeden z największych zamków w Europie.
In Malbork, there is one of the largest castles in Europe.
In this case, 'Malborku' is used in the genitive case to denote association or origin relating to the inhabitants.
Mieszkańcy Malborku często uczestniczą w historycznych rekonstrukcjach.
Inhabitants of Malbork often participate in historical reenactments.
Here, 'Malborku' is used in the genitive case, as it is part of the expression indicating possession or relation to 'history'.