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

개인전individual sport 단체전team sport; team competition 도전challenge 도전자challenger 도전장challenge 도전적being defiant 도전적defiant; challenging 작전maneuver; tactics; strategy 전쟁war 준결승전semifinal