黒煙 （コクエン） black smoke

黒衣 （コクイ） black clothes

大黒 （ダイコク） god of wealth, monk's wife

二黒 （ジコク） second of nine traditional astrological signs (corresponding to Saturn and southwest)

黒 （くろ） black, black stone, guilt, guilty person

黒い （くろい） black, dark, blackish, sun-tanned (skin), suspicious, criminal, illicit, darkened and dirty, sooty, covered in dirt, evil, wicked, black-hearted, inauspicious, ill-boding, unlucky

黒ずむ （くろずむ） to blacken, to darken

黒い （くろい） black, dark, blackish, sun-tanned (skin), suspicious, criminal, illicit, darkened and dirty, sooty, covered in dirt, evil, wicked, black-hearted, inauspicious, ill-boding, unlucky

黒色 （くろいろ） black (colour, color)