Ключевые слова: abstract, alarm, alphabet, architecture, black, building, business, button, choice, chrome, close, communication, construction, design, door, down, elevator, equipment, floor, hotel, image, industrial, inside, level, lift, light, machine, metal, metallic, moving, number, numbers, office, panel, press, push, shiny, sign, silver, steel, symbol, technology, transport, transportation, up, white,