Ключевые слова: advertising, architecture, billboard, black, blackboard, blank, board, chalk, chalkboard, class, classroom, communication, concept, counter, countertop, cutting, decor, decoration, design, desk, desktop, display, education, empty, frame, green, idea, isolated, lecture, message, nobody, old, room, school, table, teaching, texture, vintage, wall, white, wood, wooden, write,