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

폐경menopause 폐교closing down a school 폐막closing; ending; finishing 폐막식closing ceremony 폐쇄closing; blocking 폐쇄성being closed-minded; being closed 폐쇄적being closed 폐쇄적closed 폐장close 폐점closure; closedown