griefing is where you break/destroy something that does not belong to you, unless you have permission to do so
If you're going to say that you also have to say that stealing is taking of ones items when not allowed .
However, stealing is much easier than griefing and won't be lead to punish. Like who cares if you lost your stupid diamond boots
hate it when people say "as a admin on this server i will have to ban you unless you pay me at least $500"