兇悍[kyoukan] heinousness
元兇[gankyou] ringleader
兇悪[kyouaku] atrocious
兇漢[kyoukan] villain
兇器[kyouki] dangerous weapon

兇具[kyougu] dangerous weapon
兇行[kyoukou] violence
兇手[kyoushu] assassin
兇状[kyoujou] crime

アナログデジタル変換器[anarogudejitaruhenkanki] analog-digital converter
パリティ変換[paritihenkan] parity transformation (physics)
異変[ihen] unusual phenomenon
移り変り[utsurikawari] change (e.g. season)
一定不変[itteifuhen] invariable

一風変った[ippuukawatta] eccentric
一変[ippen] complete change
黄変米[ouhenmai] spoiled rice
化学変化[kagakuhenka] chemical change
かな漢字変換[kanakanjihenkan] kana-kanji conversion (on a computer, etc.)