これと同じ[koretoonaji] the same as this
と同じ様に[toonajiyouni] in the same way as
安定同位体[anteidouitai] stable isotope
異句同音[ikudouon] in concert
異口同音に[ikudouonni] in one voice

異同[idou] difference
一口同音[ikkudouon] reading in unison
一視同仁[isshidoujin] loving every human being with impartiality
一心同体[isshindoutai] being one in body and soul
一同[ichidou] all present

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

似て非なる[nitehinaru] falsely similar
似而非[ese] false
似非事[esegoto] laughable affair
似非者[esemono] sham
似非笑い[esewarai] smirk

似非親[eseoya] distant disinterested parent
似非理屈[eserikutsu] sophistry
人非人[ninpinin] brute of a man
是か非か[zekahika] right or wrong
是が非でも[zegahidemo] rightly or wrongly