Ключевые слова: abstract, arc, burst, center, centric, centrifuge, circle, circular, cochlear, coil, concentric, curve, curvy, cycle, cyclic, element, geometric, gyre, helix, illustration, kink, kinky, radial, radiating, radiation, radius, ring, ripple, roll, rotary, rotation, round, shape, snail, spiral, swirl, torque, torsion, turbulence, twirl, twist, vertigo, volute, vortex, whirl, whirlpool, whorl,