금강석diamond 보석jewel 비석tombstone; monument 석류pomegranate tree 석유oil; petroleum 일석이조killing two birds with one stone 초석cornerstone; foundation stone 치석tartar; scale; plaque 타산지석learning from someone else's mistakes; lesson from someone else's failures 탄생석birthstone

화산volcano 산수landscape 남산Namsan Mountain 등산hike; mountain climbing 산mountain 태산huge mountain 하산climbing down a mountain; going down a mountain 등산가alpinist; mountaineer 등산객hiker; mountaineer 등산로trail