Ключевые слова: abstract, advertisement, advertising, announcement, art, backdrop, background, billboard, black, black board, blackboard, blank, board, canvas, chalk, chalkboard, closeup, college, communication, copy, dark, design, dirty, element, empty, grey, grunge, grunge background, grungy, horizontal, lesson, macro, menu, message, nobody, notice, noticeboard, old, rubbed, smudged, space, student, surface, symbol, texture, textured, used, vintage, wall, write,