黒字【くろじ】
(being in) the black, surplus, black letter
黒人【こくじん】
black person, woman in the nightlife business, demimondaine, geisha and prostitutes
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
白黒【しろくろ】
black and white, monochrome, good and evil, right and wrong, guilt and innocence
黒鉛【こくえん】
graphite
黒板【こくばん】
blackboard
暗黒【あんこく】
darkness
大黒柱【だいこくばしら】
central pillar (of a building), mainstay (e.g. of an economy), backbone (e.g. of a family), provider, main man
黒潮【くろしお】
Kuroshio Current, Japan Current
黒衣【こくい】
black clothes
黒白【くろしろ】
black and white, right and wrong
黒い霧【くろいきり】
thick fog (of suspicion), black veil of secrecy, covered-up crime, unethical act, etc.
漆黒【しっこく】
jet black
浅黒い【あさぐろい】
dark (skin, complexion, etc.), swarthy, tanned