Ok, I don't know much on errors, but I have heard these terms used pretty often - so I googled them to see what I could find out. http://www.geocities.com/NCADD/educational1.html This explained a lot. I thought it was a pretty good educational page, so I thought I would share it for anyone else who wanted to read on the subject. It has pictures, so you can see what they are talking about, too.
