This is the 336th most frequent Japanese word.
災害
"Disaster" or "calamity."
Here, '災害' refers to a general disaster that caused people to evacuate.
災害の影響で多くの人が避難しています。
Many people are evacuating due to the disaster.
In this sentence, '災害' is used to denote potential disasters for which preparations are made.
災害に備えて非常食を準備しました。
I prepared emergency food in case of a disaster.
Here, '災害' specifies historical disasters that the area experienced.