Ключевые слова: advertise, advertising, alarm, alert, announcement, attack, attention, brazilian, broadcast, calling, caution, cityscape, collapse, communication, community, construction, danger, dangerous, defense, destruction, disaster, earthquake, emergency, erosion, evacuation, hazard, impromptu housing, landscape, landslide, loudspeaker, megaphone, nature, notify, post, poverty, public, residential, risk, signal, siren, slum, slum house, sound, speak, storm, symbol, system, tragedy, warning, zone,