Ключевые слова: 2020, 2021, academic year, advertising, announcement, antique, background, billboard, black, blackboard, board, chalk, chalkboard, class, classroom, drawing, dust, educate, education, enlightenment, formation, frame, grunge, high, horizontal, institute, internship, learn, learning, lesson, message, old, pattern, presentation, professional, retro, school, senior, session, studying, teach, text, texture, textured, training, vintage, wood, wooden, work, write,