This document defines key vocabulary related to disasters. It identifies two main types of disasters: natural disasters that result from natural Earth processes like floods, hurricanes, earthquakes and tsunamis, and man-made disasters caused by human activities like war, accidents, and industrial explosions. Specific natural disasters defined include landslides, floods, storms, tsunamis, earthquakes, and avalanches. Specific man-made disasters include war, car accidents, rail accidents, and plane crashes.