변경變更 change; alteration 초경初更 first watch of the night 갱년기更年期 menopause 갱생更生 revival; recovery 갱신更新 renewal; update 갱지更紙 groundwood paper; coarse paper; newsprint paper 경신更新 renewal; update 사경四更 the fourth watch of the night 이경二更 second watch of the night 일경一更 first watch of the night 삼경三更 the third watch of the night 오경五更 five divisions of the night