십이월December 이십twenty 이월February 일석이조killing two birds with one stone 신토불이belief that domestic farm products are the best 십이지장duodenum 유일무이being the one and only 이경second watch of the night 이등second; second class 이등병private; ordinary seaman; airman

청산가리potassium cyanide 탄산carbonic acid 탄산음료soda; carbonated drink 황산sulfuric acid 강산strong acid 강산성acidity 산acid 산성acidity 산성화acidification 산소oxygen

화장실toilet; restroom; bathroom 화장품cosmetics; makeup 문화culture 소화제digestive medicine 화장make-up; putting on cosmetics 화장대dressing table; make-up table 화장지facial tissue; Kleenex 화학조미료flavor enhancer; artificial flavors; chemical condiment 간편화simplification; making something handy 고급화enhancement

연탄briquet 탄광coal mine; pit 탄광촌coal-mining town 탄산carbonic acid 탄산음료soda; carbonated drink 탄소carbon 탄수화물carbohydrate 구공탄coal briquette 도탄distress 목탄charcoal

평소ordinary times 소재material 요소element; component; factor; requisite 탄소carbon 혈색소hemoglobin 형태소morpheme 화소pixel 활력소tonic; energizer; shot in the arm; refresher 효소enzyme 간소화simplification