title: Angular2: Module and Component difference
body: <p>I don't quite to figure out, why Angular2 have two concepts?</p>
  
  <ol>
  <li><p>Module </p></li>
  <li><p>Component</p></li>
  </ol>
  
  <p>What is the difference between them and which should be the role they would play?</p>
  
  <ul>
  <li>When would i need to create a <strong>SubModule</strong>?</li>
  <li>When would i need to create a <strong>SubComponent</strong>?</li>
  </ul>