Ключевые слова: activity, architecture, blue, building, built, business, cement, civil, constructing, construction, constructional, constructive, crane, development, dirt, district, engineering, equipment, exterior, gray, high, house, housing, industrial, industry, iron, machine, machinery, material, metal, mobile, ownership, part, reinforcement, residential, roof, safety, scene, site, steel, structural, structure, tall, urban, vehicle,