This is the 10762nd most frequent Polish word.
dworców
"Dworców" means "stations" (genitive plural form, typically referring to train or bus stations).
In this sentence, the word 'dworców' is in the genitive plural form, referring to 'stations' in the context of abundance or existence in cities.
W miastach jest wiele dworców kolejowych.
Cities have many railway stations.
Here, 'dworców' is used again in the genitive plural form, indicating possession or association with the map.
Widziałem mapę wszystkich dworców w kraju.
I saw a map of all the stations in the country.
In this case, 'dworców' refers to 'stations' in the genitive plural form, used to describe interaction or utilization of these entities in various places.