Not same thing, Save implies you want to save the work in progress, so xcf typically (thats the gimp project format, so you can do things like undo stuff etc).

Not same thing, Save implies you want to save the work in progress, so xcf typically (thats the gimp project format, so you can do things like undo stuff etc). Export is well export "Take this project and make it <Foo> format with <Bar> quality" settings. It's the way many print/graphics packages split it conceptually.