Ключевые слова: ad, advertisement, advertising, announcement, billboard, black, blackboard, blank, board, canvas, chalk, chalkboard, class, classroom, communication, concepts, copy, creativity, design, dirty, drawing, dust, education, element, empty, grunge, grungy, handwriting, horizontal, ideas, learning, message, notice, noticeboard, old, painted, plan, rough, rubbed, school, space, surface, texture, textured, vignette, wall, wallpaper, writing,