This is the 4564th most frequent Arabic word.
أسود
Black.
The word "أسود" is used here metaphorically within the noun "السواد" to describe the intense darkness of the night, emphasizing its lack of light.
الليل كان حالك السواد.
The night was pitch black.
The word "أسود" is directly describing the color of the cat.
وجدت قطًا أسود في الحديقة.
I found a black cat in the garden.
"أسود" is used to state a characteristic of charcoal, indicating its usual color.