This is the 10417th most frequent Polish word.
czarnych
"Of the black" or "black (plural, genitive case)."
Czarnych serves as an adjective modifying the plural noun 'pasów' (genitive case).
Dołączyłem do klubu czarnych pasów w karate.
I joined the black belts club in karate.
Czarnych acts as a noun in plural form (genitive case) referring to a group of people designated by their color.
Historia czarnych w Ameryce jest pełna wyzwań.
The history of black people in America is full of challenges.
Czarnych is used as an adjective modifying the plural noun 'kruków' (genitive case).