최고the highest; top 고등학교high school 고등학생high school student; high schooler 최고가the highest price; top price 최고급the highest grade; top-level 고교high school 고급high quality; high grade 고급반class for advanced learners; the highest-level class 고급품high-end product 고급화enhancement

출입going in and out; entry 출입국departure; entry 입구entrance 출입coming and going 입국entering a country 입수to obtain 입구entrance; entry; gate 입원hospitalization 입장권admission ticket; entrance ticket 입학admission to a school; entrance into a school