Ключевые слова: advertisement, announcement, back, background, banner, bill, billboard, black, blackboard, blank, board, border, business, cafe, chalk, chalkboard, classroom, communication, design, dirty, drawing, easel, education, empty, frame, information, isolated, learn, lesson, menu, message, note, outdoor, publicity, restaurant, retro, road, school, sign, small, space, stand, street, texture, urban, wood, wooden,