전공major; specialty 비전문가nonprofessional; amateur 전공과목major course 전문가expert; specialist 전문점specialty store 전문직profession 전용being private 부전공minor 비전문적unprofessional 전공의resident

전공major; specialty 공격attack; raid 공격적attacking; being belligerent 공격적attacking 전공과목major course 총공격all-out attack; full-scale attack 침공invasion; attack 특공대special forces 협공pincer movement 공격성aggression

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