칠십seventy 팔십eighty 구십ninety 사십forty 삼십thirty 십ten 십만hundred thousand 십이월December 십일월November 오십fifty

청년young person; youth 청소년teenager 매년every year 학년school year; grade 백년a hundred years 학년school year 내년next year 년nyeon 매년being annual 매년year by year; annually

타산지석learning from someone else's mistakes; lesson from someone else's failures 파죽지세irresistible force; crushing power 형제지간sibling relationship 호구지책means of livelihood; method of eking out 호연지기magnanimousness; gallantry; great spirit 감지덕지very thankfully 감지덕지very thankfully 격세지감being amazed at how much things have changed in a short time 견원지간cat-and-dog terms 결자해지one's untying a knot one has tied

계산calculation 시계clock 체온계thermometer 체중계bathroom scale 초시계stopwatch 탁상시계table clock 통계estimation 합계total; sum total 회계사accountant; CPA 가족계획family planning