What's the difference between editing and proofreading?

What's the difference between editing and proofreading?

Russell Celyn Jones (Published writer. Professor of Creative Writing and Director of the MA Programme at Birkbeck College (University of London).) gives expert video advice on: How can I tell if my novel is any good?; Why does my work need to be edited?; Can I edit my own novel? and more...

Editing tends to cover all bases, it's structural, and proofreading is line by line editing only.