This is the 6408th most frequent Russian word.
чёрный
Black.
Used as an adjective describing the color of the cat.
Чёрный кот сидел на подоконнике.
A black cat was sitting on the windowsill.
Used as an adjective describing plain coffee, without additions like milk or cream.
Я люблю чёрный кофе без сахара.
I like black coffee without sugar.
Used metaphorically to indicate a negative or intense emotional state.