개선improvement 개혁reform; reformation 회개repentance; penitence 개가woman's remarriage 개각cabinet reshuffle; cabinet shake-up 개과천선reforming one’s character; mending one´s ways 개량improvement 개량종improved breed 개량형improved model 개량화improvement

최선the best 개선improvement 최선책the best plan 친선friendship; amity 개과천선reforming one’s character; mending one´s ways 개선안improvement plan 권선징악encouraging good and punishing evil 다다익선the more, the better 독선self-righteousness 독선적self-righteousness

산책walk; stroll 해결책solution; answer; fix 대책measure; action 정책policy 최선책the best plan 타개책breakthrough; solution; remedy 호구지책means of livelihood; method of eking out 회유책conciliatory policy 획책plot; scheme 강경책hard-line solution