The OP has only ever made this one posting, so as they are unlikey now to return, I think we can assume that they were referring to on-page and off-page.
That being said, we have had clear explanations of what the difference is between them. If anyone is still unsure, they can do a Google search.
So for anyone viewing this thread now, please read it before posting, and only post if you have some new perspective to add, i.e. please do not repeat was has been said already.