劈く[tsunzaku] to break
劈開[hekikai] cleavage (in gems)
劈頭[hekitou] outset

開巻劈頭[kaikanhekitou] at the very beginning of a book
劈頭第一[hekitoudaiichi] at the outset

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