Ключевые слова: academic, advertising, background, banner, beginner, billboard, blackboard, board, business, cap, certification, chalk, chalkboard, class, classroom, concept, course, degree, dictionary, educate, education, english, flag, frame, german, germany, graduate, graduation, grammar, green, hat, horizontal, isolated, language, learn, lesson, presentation, retro, school, speak, sponge, start, study, studying, teach, today, vintage, wood, work, write,