Ключевые слова: abstract, art, black, brain, cog, cogwheel, color, colorful, concept, contour, creativity, design, engineering, face, gear, head, human, icon, idea, illustration, imagination, industrial, innovation, inspiration, intelligence, invention, isolated, line, linear, lineart, machine, man, mind, outline, people, person, profile, science, sign, silhouette, solution, square, symbol, technology, think, white,