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

お花見[ohanami] cherry blossom viewing
一花[hitohana] success
卯の花[unohana] bean-curd lees
雲鬢花顔[unbinkagan] beautiful woman (metaphorical)
黄花[kouka] chrysanthemum

火花[hibana] spark
花の木[hananoki] flowering tree
花瓣[hanabira] (flower) petal
花より団子[hanayoridango] dumplings rather than flowers

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