This is the 2689th most frequent Polish word.
czarne
"Black" (plural or neuter singular form).
Adjective describing color of the pants.
Mam czarne spodnie.
I have black pants.
Adjective describing the appearance of clouds.
Czarne chmury nadciągały na niebo.
Black clouds were gathering in the sky.
Metaphorical use describing morally or figuratively 'dark' characters.