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

験を担ぐ[genwokatsugu] to be superstitious
ビジネススクール入学共通試験[bijinesusukuurunyuugakukyoutsuushiken] business school entrance test
リトマス試験紙[ritomasushikenshi] litmus paper
英語基礎能力試験[eigokisonouryokushiken] English Language Proficiency Test
化学試験[kagakushiken] chemical test

核実験[kakujikken] nuclear (bomb) test
核兵器実験[kakuheikijikken] nuclear test
基礎試験[kisoshiken] preclinical study
期末試験[kimatsushiken] final exam
経験[keiken] experience