면적area 적극being strong; being positive; being active 적극적being active 적극적active 총면적total area; gross area 축적accumulation 퇴적being accumulated; accumulation 퇴적물something accumulated 퇴적암sedimentary rock 퇴적층sedimentary layer

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