A nonimmigrant visa is a type of visa that allows foreign nationals to enter a country temporarily for specific purposes, such as tourism, business, or study. Unlike immigrant visas, which are intended for those seeking permanent residency, nonimmigrant visas are designed for individuals who plan to return to their home country after their visit. There are various categories of nonimmigrant visas, including B-1 for business visitors, B-2 for tourists, and F-1 for students. Each category has its own requirements and limitations, ensuring that the visa holder adheres to the intended purpose of their stay in the host country.