This is the 2484th most frequent Polish word.
hongkongu
"Hongkongu" is the genitive or locative case of "Hongkong" (Hong Kong) in Polish.
'Hongkong' refers to Hong Kong as a geographic location or city.
Odwiedziłem kilka lat temu Hongkong, wyjątkowe miasto.
I visited Hong Kong, an extraordinary city, a few years ago.
'hongkongu' is in a genitive case, referring to something that belongs to Hong Kong (e.g., the cuisine).
Zupełnie się nie spodziewałem tak różnorodnych smaków kuchni hongkongu.
I totally did not expect such diverse flavors of Hong Kong's cuisine.
'hongkongu' again refers to Hong Kong in the context of possession or origin, in the genitive case.