Ключевые слова: abstract, ad, advert, advertisement, advertising, background, billboard, black, blackboard, blank, board, chalk, chalkboard, class, classroom, communication, copy, copyspace, design, distressed, drawing, education, empty, fabric, grunge, handwriting, holidays, image, information, isolated, learning, leather, lesson, material, message, natural, old, red, rough, sale, school, skin, space, surface, textile, texture, textured, vintage, wall, wallpaper, writing,