This is the 7197th most frequent Polish word.
japończyka
"Japończyka" means "Japanese man" in English.
Here, 'japończyka' is the accusative case of 'japończyk,' meaning 'a Japanese man,' used as the direct object of the verb 'spotkałem' (I met).
Wczoraj spotkałem japończyka na ulicy.
Yesterday, I met a Japanese man on the street.
In this sentence, 'japończyka' is in the genitive case, showing possession or origin, indicating 'from the Japanese man.'
Kupiliśmy samochód od japończyka.
We bought the car from a Japanese man.
Here, 'japończyka' is in the accusative case used in a negative sentence with the verb 'znam' (I know), which requires the accusative case in Polish.