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
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
暗黒【あんこく】
darkness
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
漆黒【しっこく】
jet black
黒い霧【くろいきり】
thick fog (of suspicion), black veil of secrecy, covered-up crime, unethical act, etc.
浅黒い【あさぐろい】
dark (skin, complexion, etc.), swarthy, tanned