title: What is the difference between Asynchronous calls and Callbacks
body: <p>I'm bit confused to understand the difference between <em>Asynchronous calls</em> and <em>Callbacks</em>.</p>
  
  <p>I read this posts which <a href="https://stackoverflow.com/q/9596276/4506140">teach about CallBacks</a> but none of the answers addresses <strong>how it differs from Asynchronous calls</strong>.</p>
  
  <p>Is this <em>Callbacks</em> = <em>Lambda Expressions</em>?</p>
  
  <p>Callbacks are running in a different thread?</p>
  
  <p>Can anyone explains this with plain simple English?</p>