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

공항airport 국제공항international airport 어항fishing port 항구port; harbor 항만port; harbor 귀항return to port; sail back to port; flight back to airport 내항inner harbor 무역항trade port 외항outer harbor