災い【わざわい】
disaster, calamity, misfortune, trouble, woes
火災【かさい】
conflagration, fire
災難【さいなん】
calamity, misfortune, disaster
災害【さいがい】
calamity, disaster, misfortune
防災【ぼうさい】
disaster preparedness, prevention of damage resulting from a natural disaster, protection against disaster
戦災【せんさい】
war damage
天災【てんさい】
natural calamity, disaster
震災【しんさい】
earthquake disaster, Great Kanto Earthquake (1923)
被災【ひさい】
being a victim of (some disaster), suffering from
労災【ろうさい】
work-related injury, work-related illness, work-related death, on-the-job accident, workers' compensation insurance
大震災【だいしんさい】
great earthquake (disaster), Great Kanto earthquake of 1923
火災保険【かさいほけん】
fire insurance
労災保険【ろうさいほけん】
worker's accident insurance
人災【じんさい】
man-made calamity