This is the 11306th most frequent Polish word.
hokeja
"Hokeja" in Polish means "hockey" in English.
The word 'hokeja' is in the genitive case because it follows the preposition 'w', indicating an activity ('play hockey').
Gram w hokeja na lodzie.
I play ice hockey.
The word 'hokeja' is in the genitive case to indicate the object of observation, following the structured phrase 'oglądanie czegoś' — 'watching something'.
Nie mam czasu na oglądanie hokeja.
I don't have time to watch hockey.
The word 'hokeja' is in the genitive case because it ties into the possessive structure to link 'fan' with the object of fandom ('hockey').