公開 こうかい opening to the public; making available to the public; putting on display; exhibiting; showing (play, movie, etc.); holding (interview, etc.); open; public n vs adj-no Intermediate II ➥
開拓 かいたく reclamation (e.g. wasteland); cultivation; development n vs pioneering; opening up (e.g. new market); breaking new ground; trailblazing n vs Intermediate II ➥
開催 かいさい holding (a conference, exhibition, etc.); opening; hosting (e.g. the Olympics) n vs Intermediate II ➥
開店花 かいてんばな opening day flower gift; bouquet of flowers given to a new store (restaurant, etc.) on its opening day n Advanced ➥