The difference between Android title and Actionbar

I want to put two buttons at the top of a page, should I use title or Actionbar. What's the difference between them two? When should I use it separately?

For:

Android title is a small part of the UI, it supports text and color, you can set the text information as title, you can also set the background color, but most of these are applied on the android2.0 app. Action Bar is now the main navigation control in the Android app, which can contain buttons and navigation information, add an action to the activity, display the title of the app, or some link, action Bar is a wide range of applications for Android today.

The difference between Android title and Actionbar