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
黒海【こっかい】
Black Sea
黒星【くろぼし】
black spot, black dot, bull's-eye, mark indicating a defeat, loss, failure, mistake, faux pas
黒木【くろき】
unbarked lumber
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
黒煙【こくえん】
black smoke
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
黒っぽい【くろっぽい】
dark, blackish
黒潮【くろしお】
Kuroshio Current, Japan Current
黒幕【くろまく】
black curtain, wirepuller, mastermind, backroom manipulator, éminence grise, power broker
黒衣【こくい】
black clothes
黒色【くろいろ】
black (colour, color)
黒船【くろふね】
black ships, Western ships that came to Japan between the 16th and 19th centuries, esp. those of the Perry Expedition in 1853, foreign disruptor (of the Japanese market), product, person, etc. arriving from the West and disturbing the Japanese market
黒塗り【くろぬり】
blackened, black-painted, black-lacquered, blacked out, blackened thing
黒白【くろしろ】
black and white, right and wrong