title: Navigationbar title and back button name are same?
body: <p>I created one title for navigationbar in my storyboard project ,but when I moved to next viewcontroller the back button shows the same name as my previous navigationbar(Main navigationbar) title.? Can i set separate title and back button names?</p>
  
  <p>I tried following code but its not working ? why?</p>
  
  <pre><code> self.navigationItem.title=@"Recent Books";
  self.navigationItem.backBarButtonItem.title=@"Back";
  </code></pre>