Ключевые слова: abstract, backdrop, background, barb, barrier, black, blue, blurred, border, boundary, cage, chain, closeup, danger, fence, forbidden, frame, freedom, grid, healthy, holocaust, industrial, iron, isolated, jail, light, line, link, mesh, metal, metallic, mountains, nature, orange, outdoor, pattern, prison, protection, safety, security, shape, silhouette, sky, steel, sunset, texture, wall, wallpaper, wire, zone,