admin menu naming

This post may help you to achieve your goal.

http://code.tutsplus.com/articles/customizing-your-wordpress-admin–wp-24941

example would be like below,

function edit_admin_menus() {
    global $menu;
    global $submenu;

    $menu[5][0] = 'Recipes'; // Change Posts to Recipes
    $submenu['edit.php'][5][0] = 'All Recipes';
    $submenu['edit.php'][10][0] = 'Add a Recipe';
}
add_action( 'admin_menu', 'edit_admin_menus' );