Zud is a word used in Mongolia to describe a harsh winter where there is not enough food for the animals. In Mongolia, animals like sheep, cows, and horses are very important because they provide milk, meat, and fur. During the winter, the animals need grass and hay to eat, but if there is too much snow or too little rain, the grass and hay don't grow. This means that the animals don't have enough food to eat and they can get very sick or even die. The word "zud" is used to describe this situation because it means both "disaster" and "severe winter." It's a very serious problem in Mongolia because it can cause a lot of problems for the people who live there, too. So when people use the word "zud," they are talking about a very difficult situation that affects not only the animals but also the people who rely on them for their livelihood.