Please explain this to me

What is the difference between the blog, video, sites etc in the profile tab and the one that is shown across all the tabs on top of the site?

If i remove the Tab function on the top, it does not  remove the one from the profile. Are the ones in the profile only for your personal use, and the one on the tab for all the members?

Kindly help. See i wish to remove all access to the video option, so does that mean I have check every place and remove it in every appearance?

What about sites? Does it work the same way.

The menu items under the profile menu item are related to your profile, which is where they differ. You should be able to remove the menu item for videos under the profile menu item (which is called "My Profile"). In short, if the menu item is green, you can modify it, or remove it entirely.