Ключевые слова: adult, advertisement, background, billboard, blue, business, car, caution, city, color, commercial, construction, danger, day, editorial, equipment, fun, industry, information, life, machinery, marketing, men, message, metal, occupation, old, outdoors, placard, retail, road, safety, service, sign, single, site, store, text, tourism, traffic, transport, transportation, travel, vibrant, word, worker, working, yellow,