전후before and after 목전before one's eyes 오전morning 오전반morning class 이전previous time; before 전past 전former 전전before last 전전before last 면전in front of somebody; in one's presence

치과dental surgery; dentistry; dentist’s office; dental clinic 교과서textbook 내과internal department 피부과dermatology; department of dermatology 학과major; department 경영학과Department of Business Administration 경제학과Department of Economics 과목subject 과장head; chief; director; supervisor 과학science

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