The grab cursor goes a step beyond the move cursor, signaling that more than just positional changes are at play when you drag and drop an item.

For instance, when you drag a file over a designated drop zone for uploading, or pull an object into a toolbar to create a shortcut, the grab cursor usually appears. It clues users into the fact that dragging the item won't just move it; it will also trigger additional actions or property changes. So when the task involves more than mere repositioning, opt for the grab cursor to provide a clearer hint to your users.