Get the Current Page Slug-Name

Assuming you’re doing this from inside the Loop, you can get it this way:

global $post;
$page_slug = $post->post_name;

Then just use echo $page_slug; in the location(s) you which to have it displayed.

For outside the loop, you will need to use different code:

$the_page = sanitize_post( $GLOBALS['wp_the_query']->get_queried_object() );
$slug = $the_page->post_name;