what is Bashing & Cyber bullies

There are all kind of examples of Bashing and cyber bullies and some may know the differene and some may not...
Where did the word bashing come from?
Your definitions are greatly appreciated with your examples.

I don't know, it's been around I think since I was in high school and that was before some of you guys PARENTS were born!

Bashing someone was a common expression for cutting someone down for making stupid remarks!