Ключевые слова: abstraction, ball, bio, biology, bubble, care, colored, concept, crystal, cyberspace, earth, education, environment, figure, form, geography, geometry, glass, global, globe, globus, hand, illustration, internet, isolated, life, light, map, net, network, one, planet, politics, quarantine, safe, school, sciens, shape, sphere, structure, symbol, taking care, web, world, worldwide, www,