Ключевые слова: abstraction, background, barrier, black, border, cage, chain, chrome, cold, construction, design, fence, frame, frost, hard, ice, industrial, industry, iron, leaf, link, mesh, metal, nature, old, panel, pattern, prison, protection, round, seasonal, security, shape, silver, snow, snowflake, steel, technology, texture, wall, weather, white, winter, wire,