深淵[shinen] abyss
淵源[engen] origin
淵叢[ensou] gathering spot

海淵[kaien] ocean depths
深淵に臨むが如し[shinenninozomugagotoshi] like looking out on an abyss
淵酔[ensui] type of imperial banquet held during the Heian period and later

一念発起[ichinenhokki] being resolved to (do something)
引き起す[hikiokosu] to cause
縁起[engi] omen
喚起[kanki] arousal
起きる[okiru] to get up

起上る[okiagaru] to rise
起す[okosu] to raise
起こり得る[okoriuru] to be possible to occur
起る[okoru] to occur
起つ[tatsu] to rise up