Page Name vs. Page Title
It can be confusing, but you need to understand the difference.
Changing a Page's Name
Changing a Page’s Name affects many things, so be careful.
Changing a Page's Title
Create a new Title that appears at the top of a Page.
Changing a Page's Description
Altering a Page’s Description can benefit other editors and website visitors.
Changing a Page’s Owner
Change the Page’s owner, as far as the CMS is concerned.