- A black, porous form of carbon - Blackened wood - Burn carbon to obtain artist’s medium - Burnt wood - Charred wood used as fuel - Dark grey arch made with Newcastle product - Dark grey colour
- Cloud - Cloud of gas or dust in space - Dark patch in the sky - A faint, cloudlike, self-luminous mass of matter situated
beyond the solar system among the stars. True nebulae are gaseous; but
very distant star clusters often appear like them in the telescope. - A white spot or a slight opacity of the cornea. - A cloudy appearance in the urine.