Ключевые слова: abstract, asphalt, backdrop, background, ballast, cobble, construction, crumb, crushed, design, engineering, floor, grain, grainy, granite, gravel, gray, grey, grit, ground, hard, heap, industrial, layer, macadam, mine, mineral, natural, pale, pattern, pebble, pebbles, pile, raw, resources, road, rock, rough, rubble, sand, shingle, site, small, stone, stones, surface, texture, textured, wallpaper, white,