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

雨子[amago] land-locked variety of red-spotted masu trout (Oncorhynchus masou ishikawae)
ひと雨[hitoame] shower
雨雲[amagumo] rain cloud
雨蛙[amagaeru] tree frog (esp. the Japanese tree frog, Hyla japonica)
雨笠[amagasa] rain hat

雨具[amagu] rain gear
雨空[amazora] rainy sky
雨靴[amagutsu] waterproof shoes
雨戸[amado] sliding storm shutter