Ключевые слова: abstract, atom, biology, blur, blurred, buttons, chemistry, circle, concept, connection, design, direction, education, energy, flat, graphic, grey, icon, illustration, isolated, label, magnification, mark, micro, microscopic, model, molecular, nuclear, orbit, particle, physics, power, proton, quality, research, round, science, scientific, scientist, shadow, shape, sign, single, sparse, sphere, structure, symbol, technology, threedimensional,