Ключевые слова: abstract, attached, background, black, chain, chainlinks, close, closeup, concept, connect, connected, connection, design, detail, element, graphic, heavy, illustration, industry, interlink, iron, join, line, link, linkage, linked, lock, locked, metal, metallic, object, part, pattern, protection, repeating, ring, safety, secure, security, set, shackle, shiny, silver, steel, straight, strength, strong, symbol, symmetry,