Ключевые слова: alternative, art, blue, cable, connect, connection, contour, eco, ecology, electric, electricity, energy, equipment, geography, geometric, global, globe, glowing, icon, internet, isolated, leaf, leaves, light, line, linear, lineart, map, neon, outline, package, panel, paper, planet, power, recycle, recycling, red, shopping, sign, socket, sphere, sun, symbol, travel, wire, world,