A troll is a jerkoff who just likes pissing people off. Like KimJong Il.
A newbie is a kid who wants to lift, and thinks he's been doing it the right way, only to come on here and get flamed. But I think alot of times its good for them, and Prof. X will vouch for it.
Its kind of like the Irish and the Scottish. Seems the same, but really are completely different.