安い[yasui] cheap
安っぽい[yasuppoi] cheap-looking
安らか[yasuraka] peaceful
安らぎ[yasuragi] peace (of mind)
安んじる[yasunjiru] to be contented

安易[ani] easy
安穏[annon] peace
安価[anka] low price
安臥[anga] quiet rest
安楽[anraku] ease

半平[hanpei] pounded fish cake
アジア太平洋地域[ajiataiheiyouchiiki] Asia-Pacific region
ダウ平均株価[dauheikinkabuka] Dow-Jones average
ノーベル平和賞[nooberuheiwashou] Nobel peace prize
悪平等[akubyoudou] misguided equality

開平[kaihei] extraction of square root
平す[narasu] to make even
公平[kinpira] chopped burdock root (and sometimes carrot) cooked in sugar and soy sauce
金平糖[konpeitou] small coloured sugar candy covered in bulges
公平[kouhei] fairness

其の後[sonoato] after that
已後[igo] after this
一死後[isshigo] after one out (in Baseball)
気後れ[kiokure] nervous
紀元後[kigengo] post-era

空前絶後[kuuzenzetsugo] (so marvelous or horrible that it may be) the first and probably the last
兄後[anigo] elder brother
月後れ[tsukiokure] a month or older
午後[gogo] afternoon
午後中[gogojuu] throughout the afternoon

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