재생resurrection 재시험re-test 재작년the year before last year 재활용recycling 재활용품recyclable item 비일비재frequent occurrence; being commonplace 재가remarriage 재개resumption 재건rebuilding 재건축rebuilding

개교establishment of a school 개교기념일school anniversary 개교식school opening ceremony 개발development; exploitation 개발비development expense 개방opening; opening to the public 개봉관first-run theater 개봉작new release 개업의private practice physician 개원opening of a hospital; opening of an institute

출발departure; leaving 출발선starting line 출발역departure station 출발점starting point 출발지point of departure 폭발outburst 개발development; exploitation 개발비development expense 발견discovery; detection 발급issue