title: What is the difference between a pattern and a path?
body: <p>I'm learning Symfony2 and I was wondering what the difference is between a pattern and a path in the demo that contains a "pattern"? I.e.:</p>
  
  <pre><code>acme_hello_namespace_homepage:
      pattern:  /hellons/{name}
      defaults: { _controller: AcmeHelloNamespaceBundle:Default:index }
  
  hello:
      path:     /hellons/{name}
      defaults: { _controller: AcmeHelloNamespaceBundle:Hello:index }
  </code></pre>