The word "灾祸" is formed by combining two characters: "灾" and "祸". "灾" symbolizes disaster, historically derived from the depiction of fire (火) under a roof (宀), representing a calamity such as a house fire. "祸" denotes misfortune, composed of the radical "示" (related to spirits or deities) and the phonetic component "呙", implying a disaster with supernatural connotations. Together, they form a compound word where both characters convey similar meanings of catastrophe, reinforcing the concept of severe misfortune.