Ключевые слова: art, book, cellphone, chat, check, class, college, color, colorful, computer, contour, display, ebook, education, exam, form, game, gaming, graduation, headphones, icon, illustration, internet, isolated, knowledge, library, line, linear, literature, mobile, monitor, mouse, office, online, outline, phone, pop, popart, school, set, smart, student, support, symbol, technology, textbook,