遠隔講義[enkakukougi] distance learning
休講[kyuukou] lecture cancellation
公開講座[koukaikouza] extension lectures
講演[kouen] lecture
講演会[kouenkai] lecture (esp. special engagement by noted speaker)

講義[kougi] lecture
講座[kouza] academic teaching unit
講師[koushi] lecturer
講習[koushuu] short course
講習会場[koushuukaijou] training center

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