There is no difference, hand scroll is another name for long scroll.
According to the query on the Weizhi Calligraphy Network, hand scrolls are relatively long among calligraphy and painting banners. Because they are not easy to hang, they can only be unfolded, admired, and rolled up by hand, so they are called hand scrolls, and because they are relatively long It is long, so it is called a long roll.