Ключевые слова: abstract, bend, burst, centrifuge, centripetal, circle, circuit, circular, circulation, concentric, curve, curvy, cycle, cyclic, design, element, helix, line, lines, loop, orbit, pirouette, pivot, pool, quirk, radial, reel, revolve, roll, rotary, rotate, rotation, round, shape, spin, spire, spun, swirl, torque, torsion, twirl, twist, volute, vortex, whirl, whirligig, whirlpool, whirlwind, whorl,