Ключевые слова: arboretum, asia, bar, barrier, blue, city, crossing, danger, forest, gate, green, guro, hangdong, korea, landmark, landscape, metal, natural, old, outdoor, park, pureun, rail, railroad, railway, retro, road, safety, season, seoul, sign, signal, sky, spring, station, stop, street, summer, symbol, town, track, train, transportation, travel, tree, walk, warning, way,