Difference between "Drag and Drop" and "Move To Element"

What is the difference between “Drag and Drop” and “Move To Element” proprieties of “Web Actions” step in WEBGUI?

In “Drag and Drop” property, we need to give XPaths of source and destination. But in “Move To Element” property, we just need to specify the XPath of the element which we want to move and x-y coordination for the destination.