演劇[engeki] drama
歌劇[kageki] opera
楽劇[gakugeki] musical play
活劇[katsugeki] action picture
勧善懲悪劇[kanzenchouakugeki] morality play

観劇[kangeki] theatre-going
喜歌劇[kikageki] comic opera
喜劇[kigeki] comedy
喜劇映画[kigekieiga] comic film
急劇[kyuugeki] sudden

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.)