추돌rear-end collision; pileup 충돌collision; clash 격돌violent collision; clash 돌격charge 돌격대storm troops 돌기bump; swelling 돌발accident; unforeseen incident 돌발적accidentally; unexpectedly 돌발적accidental; unexpected 돌변sudden change

출구exit; way out 출근going to work; arriving at work 출발departure; leaving 출석attendance 출입going in and out; entry 출입국departure; entry 출장business trip 출퇴근commuting 출구exit 출입coming and going

대부분most; bulk; majority 대부분mostly; largely 부분part 부장department head; division head 일부part; some; portion; fraction 전부everything 전부all 학부undergraduate; college 남부southern part 내부inside; interior