強化

N2 ～化 ～ka action of making something N2 強引 gouin forcible, assertive, pushy N2 消化 shouka digestion N2 力強い chikarazuyoi powerful, strong, vigorous N2 強気 tsuyoki firm, strong N3 化学 kagaku chemistry N3 強調 kyouchou emphasis, stress, highlight N3 強力 kyouryoku powerful, strong N3 化粧 keshou makeup, cosmetics

N4 強 kyou, gou / tsuyo.i, tsuyo.maru, tsuyo.meru, shi.iru, kowa.i strong, fort, fuerte N3 化 ka, ke / ba.keru, ba.kasu, fu.keru, ke.suru change, take the form of, influence