Ключевые слова: academic, ancient, archeology, art, artifact, background, blackboard, board, book, chalkboard, class, college, culture, economic, education, egyptian, general, greek, helmet, history, icon, knowledge, learn, lesson, library, museum, old, parchment, past, pillar, political, pyramid, roman, school, science, scroll, shield, sign, sketch chalk, social, study, subject, symbol, teach, temple, university, weapon, world,