Ключевые слова: abstract, academic, achievement, background, book, cap, cartoon, celebration, ceremony, certificate, character, college, computer, concept, creative, degree, design, diploma, education, exam, flat, globe, graduate, graduation, hat, icon, illustration, internet, isolated, knowledge, learning, lesson, library, object, online, paper, pen, people, school, science, set, sign, student, study, success, symbol, technology, university, web,