開催[kaisai] holding a meeting
開催式[kaisaishiki] opening ceremony (of an event, show, etc.)
開催中[kaisaichuu] in session
共催[kyousai] joint sponsorship
催し[moyooshi] event

催物[moyoushimono] points of interest
催す[moyoosu] to hold (a meeting)
催淫剤[saiinzai] aphrodisiac
催合う[moyau] to co-operate (in enterprises)
催告[saikoku] notification

鍬入れ式[kuwaireshiki] ground-breaking ceremony
オギノ式[oginoshiki] Ogino method
サイクルアンドライド方式[saikuruandoraidohoushiki] cycle and ride system
シーアンドエア方式[shiiandoeahoushiki] sea and air system
シーリング方式[shiiringuhoushiki] ceiling system

シップエア方式[shippueahoushiki] ship air system
スキャンロン方式[sukyanronhoushiki] Scanlon plan
違式[ishiki] informality
一括式[ikkatsushiki] batch mode
一式[isshiki] complete set

インフラ開発[infurakaihatsu] infrastructure development
テキスト開始[tekisutokaishi] start of text
ヘッディング開始[heddingukaishi] start of heading
押開ける[oshiakeru] to force open
沖縄開発庁長官[okinawakaihatsuchouchoukan] Director General of Okinawa Development Agency

開き直る[hirakinaoru] to become defiant
開く[hiraku] to open (e.g. a bank-account, festival, etc.)
開ける[akeru] to open (a door, etc.)
開ける[hirakeru] to become opened up
開け閉て[aketate] opening and shutting