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

鋭鋒[eihou] brunt of attack or argument
先鋒[senpou] advance guard
兵鋒[heihou] the point of a sword
鋒先[hosaki] ear (e.g. of wheat)

鋒先[hokosaki] point of spear
舌鋒[zeppou] eloquence
急先鋒[kyuusenpou] van (of a movement)
鋒起[houki] uprising