Ключевые слова: 20, aging process, architecture, banner, blogging, business, concepts, construction industry, count, damaged, design, dirty, heavy, heavy industry, industry, internet, iron, job, material, mathematics, message, metal, news, number, numbers, old, oxidized, paint, panel, pattern, plan, plate, repair, rotting, rough, rust fungus, rusty, service, shape, template, text, texture, twenty, weathered, web page, white background, work, working, worn,