상하up and down 상수tap water 세상world 영상temperature above zero 탁상시계table clock 향상improvement; enhancement; progress 사상being in history 상good; top 상급생senior student; upper classmen 상급자senior; superior

초급elementary level; beginning stage 초급반beginner's class 최고급the highest grade; top-level 특급special class; special rank; special grade 하급생junior student; underclassman 고급high quality; high grade 고급반class for advanced learners; the highest-level class 고급품high-end product 고급화enhancement 상급생senior student; upper classmen

반group; party 사진반photography club 오전반morning class 오후반afternoon class 초급반beginner's class 고급반class for advanced learners; the highest-level class 반장head; chief 부반장vice president 중급반intermediate class 강력반violent crimes section