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

打ち撒ける[buchimakeru] to throw out (everything)
打つかる[butsukaru] to strike against
打っ付ける[uchitsukeru] to knock
安打[anda] safe hit (baseball)
１打[ichida] stroke

一打ち[hitouchi] stroke
一網打尽[ichimoudajin] (a) big haul
殴打[ouda] hit
火打石[suiseki] flint

烏有に帰する[uyuunikisuru] to be reduced to ashes
烏有先生[uyuusensei] fictitious person
恩が有る[ongaaru] to be in one's debt
価値有る[kachiaru] valuable
含有[ganyuu] contain

含有量[ganyuuryou] content (of a mineral, etc.)
享有[kyouyuu] possession
共有[kyouyuu] share
共有財産[kyouyuuzaisan] community property
共有者[kyouyuusha] joint owners