Ключевые слова: abstract, background, barbed, barrier, black, blue, border, boundary, cage, chain, closeup, concept, fence, frame, freedom, grate, grid, highlight, iron, jail, lattice, light, link, mesh, metal, metallic, nature, net, ocean, old, outdoor, pattern, prison, protection, rusty, safety, sea, security, steel, summer, sun, sunlight, sunny, sunshine, texture, view, wall, water, white, wire,