단순simpleness 단어word 단어장lexical notebook; vocabulary notebook 단just; merely; simply 단독being independent; being singular 단원chapter; unit 단위unit 단층being one-storied 명단list of names 혈혈단신being all alone; being by oneself

출발departure; leaving 출발선starting line 출발역departure station 출발점starting point 출발지point of departure 폭발outburst 개발development; exploitation 개발비development expense 발견discovery; detection 발급issue