Ключевые слова: aggregate, backdrop, background, ballast, black, boulder, broken, chippings, closeup, coarse, construction, crushed, dirt, dust, floor, glauconite, graded, granite, gravel, gray, grey, grit, ground, grunge, loose, macadam, material, mineral, monotone, pattern, pebble, pieces, pit, quarry, raw, refracted, road, rocks, rough, round, sand, shades, small, stack, stone, structure, surface, texture, wallpaper,