御食い初め[okuizome] weaning ceremony
為初め[shisome] outset
為初める[shisomeru] to begin to do
仮初[karisome] temporary
業界初[gyoukaihatsu] the industry's first ...

月初め[tsukihajime] beginning of month
最初[saisho] beginning
初めに[hajimeni] to begin with (used as an introduction)
初めは[hajimeha] at first
手初めに[tehajimeni] at first

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

陰核[inkaku] clitoris
核エネルギー[kakuenerugii] nuclear energy
核家族[kakukazoku] nuclear family
核開発[kakukaihatsu] nuclear development
核災害[kakusaigai] nuclear disaster

核酸[kakusan] nucleic acid
核子[kakushi] nucleon
核実験[kakujikken] nuclear (bomb) test
核心[kakushin] core

御結び[omusubi] rice ball
この結果[konokekka] consequently
テキスト終結[tekisutoshuuketsu] end of text
愛の結晶[ainokesshou] fruit of love
援助凍結[enjotouketsu] suspension of aid

縁結び[enmusubi] marriage
完結[kanketsu] conclusion
完結文[kanketsubun] sentence
帰結[kiketsu] consequence
凝結[gyouketsu] coagulation