安全期[anzenki] safe period
暗黒期[ankokuki] eclipse period
一期[ichigo] one's life time
一期[ikki] one term
一期一会[ichigoichie] once-in-a-lifetime encounter (hence should be cherished as such)

一周期[isshuuki] period (in astronomy)
一定期間[itteikikan] fixed interval
延期[enki] postponement
延期になる[enkininaru] to be postponed
沖積期[chuusekiki] alluvial period

鳥渡[choto] just a minute
応急渡河[oukyuutoka] hasty crossing
下げ渡す[sagewatasu] to make a (government) grant
仮渡し[kariwatashi] temporary approximate payment
過渡[kato] crossing

過渡期[katoki] transition period
過渡的[katoteki] transitional
橋渡し[hashiwatashi] bridge building
響き渡る[hibikiwataru] to resound
見渡す[miwatasu] to look out over

に過ぎない[nisuginai] no more than
マルコフ過程[marukofukatei] Markov process
為過ぎる[shisugiru] to overdo
一過[ikka] passing away
一過性[ikkasei] transient (pain or fever)

過ぎ[sugi] past
過ぎる[sugiru] to pass through
過ぎ去った可能性[sugisattakanousei] might-have-been
過去る[sugisaru] to pass
過す[sugosu] to pass (time)