How is a worm virus different from a trojan virus?

Trojans spread faster and are more damaging.

A worm will work its way through a network affecting all that it's connected to$,$ while a trojan will affect a computer by hiding in a

downloaded file.

There is no difference.

A trojan will work its way through a network affecting all it touches, whereas a worm will "worm" its way into the computer through

email attachments.