Ключевые слова: abstract, background, black, brown, chain, chainring, color, concept, conceptual, connect, connection, craft, dark, design, element, group, grunge, heavy, industrial, industry, iron, join, line, link, macro, metal, metallic, old, ornament, outdoor, part, pattern, power, protection, rectangle, ring, round, rusty, safety, security, shape, steel, strength, strong, structure, symbol, texture, up, vintage, weathered,