効力

N3 協力 kyouryoku cooperation, collaboration N3 強力 kyouryoku powerful, strong N3 効果 kouka effect, result, efficacy N3 魅力 miryoku charm, attraction, appeal N3 有効 yuukou valid, effective N3 能力 nouryoku ability, faculty N3 努力 doryoku great effort, exertion, endeavor N4 力 chikara strength, power, force

N2 効 kou / ki.ku, kikime, nara.u merit, efficacy, efficiency N4 力 ryoku, riki, rii / chikara power, strength, strong