Ключевые слова: adventure, antique, background, ball, blue, book, bookshelf, business, class, classroom, color, concept, continent, country, earth, education, environment, future, geography, global, globe, hemisphere, history, international, library, map, meridian, model, north, object, planet, playing, retro, round, school, science, sphere, store, symbol, topographic, toy, travel, vintage, world, worldwide,