선배senior; veteran 우선priority; preference 대선배senior; veteran 선생teacher; instructor 선약prior appointment 선진being advanced 선진국advanced country; developed country 여선생female teacher 우선first of all; to begin with; before everything 우선적priority

구동driving 구박abuse; harrassment 구보run 구사competence 구사력competence 구제extermination; destruction 구충제anthelmintic 선구적pioneering; trailblazing 승승장구being on a fast track; going from strength to strength

환자patient; sick person 기자reporter; journalist 부자the rich; the wealthy 초보자beginner; novice 출연자cast member; actor 탑승자passenger 토론자panel; debater 판매자seller 편집자editor 피해자victim; sufferer