コスト効率[kosutokouritsu] cost effectiveness
圧電効果[atsudenkouka] piezoelectric effect
偉効[ikou] great effect
逆効果[gyakukouka] backfire
経済効果[keizaikouka] (positive) economic effect

効果[kouka] effect
効果音[koukaon] sound effect
効果的[koukateki] effective
効果覿面[koukatekimen] bring an immediate result on

スポーツ新聞[supootsushinbun] sporting newspaper
悪徳新聞[akutokushinbun] irresponsible newspaper
逸聞[itsubun] something unheard of
叡聞に[eibunni] (in the) emperor's hearing
下聞[kabun] enquiring beforehand

下聞き[shitagiki] enquiring beforehand
寡聞[kabun] limited information
怪聞[kaibun] strange rumor
外聞[gaibun] reputation
旧聞[kyuubun] old news