Ключевые слова: abstract, asia, background, blue, business, concept, continent, design, earth, education, element, europe, flat, geographic, geography, global, graphic, icon, illustration, international, isolated, isometric, land, map, modern, object, pictogram, planet, puzzle, round, school, science, shape, sign, silhouette, simple, sky, style, symbol, technology, travel, water, web, white, world, worldwide,