Page names are not necessarily equal to the page titles. Consider following issues:
1. Pages with title
When You edit this page ( try it now! ) You will see at the top under the Title "Edit the page"
the box (with the label "Title of the page:") Page Title - How to edit?
At creation time it will contain the page name alone (like the Url in the address bar) from
- either the "Add a new Page" box
or
-from an uncreated (open) Link in a page.
But consider:
this title you entered is used in the "Breadcrumbs" navigation bar at the top of the page (and not the page name in the Url!) if You use the parent settings ( by +options button )
2. Pages without a title
This is possible - You leave the title box in the "Edit the page" frame blank and You will get no title on the top of the page.
But remember most of the browsers can hide the address bar ( with the Url of the page) and You and any reader have lot of difficulties to find out the page name..
And - if parenting is used the breadcrumbs uses the page name like in the url (here "page title") instead an empty title.
Some Notes
You can always change the title of the Page - but do not confuse any reader with complete different titles as the page name.