Diffrence between torrent,ed2k and Magnet link?

[digit i am thinking]

Hi

I want to know, what the difference betn a torrent,ed2k and torrent file.

I know torrent files and it's peer to peer sharing. but don't know abt magnet link and ed2k.

How does it work? Which is better? which application support it?

 

[nims11]

ed2k and magnet links are URL schemes used in p2p networks.