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

사업business 수업class; lesson; course 졸업graduation 종업원employee; staff 취업getting a job 휴업being closed temporarily 가업family business 개업의private practice physician 공공사업public project 공기업public enterprise