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

사용use; usage 이용use; utilization 학용품stationery; writing supplies 활용use; utilization 가정용home use 가정용품housewares; household goods 공공용public purpose 공공용지public land 공용public use; official business 공용public use