자연nature 과연indeed 우연chance; accident 우연적being accidental; being incidental 우연적accidental; incidental 자연적being natural; being inartificial 자연적natural; inartificial 자연환경natural environment 초자연supernaturalness 초자연적being supernatural

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 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 경국지색a woman of great beauty

감기cold 감기약cold medicine 기분mood; feelings 기온air temperature 분위기mood 인기popularity 전기electricity 향기scent; fragrance 환기ventilation 활기vitality; energy; life