Ключевые слова: abstract, background, black, bond, bonding, car, clockwork, cog, cogwheel, concept, conceptual, connect, connection, design, dirty, drive, engine, engineering, equipment, gear, gearbox, gearing, gears, idea, industrial, industry, interlocked, iron, machine, machinery, mechanical, mechanics, mechanism, metal, metallic, metaphor, motor, nobody, objects, old, parts, power, precision, rust, shaft, shiny, steel, teamwork, technology, teeth, together, transmission, wheel,