암기learning by heart 암흑darkness; blackness 명암light and shade 암갈색dark brown; dun; umber 암거래black-market dealings; illegal trade; traffic 암거래상black marketeer; trafficker 암기력memory 암매장secret burial 암묵silence; tacitness 암묵적silent; tacit

우울depression; melancholy 우울감depression 우울증the blues; mental depression; melancholy 울분rage; anger; frustration 울화anger; rage 울화병anger disorder 조울증manic depressive disorder; manic depression; bipolar disorder 울릉도Ulleungdo Island