title: Drupal custom content type establishing a parent and child
body: <p>I am currently building a site on Drupal and I am struggling to work out how to have some parent content (that is created through a custom content type) and some child content that is created through a different custom content type, is this even possibe?</p>
  
  <p>The outcome would be to have some output that would look like this?</p>
  
  <ul>
  <li>Service Number 1
  <ul>
  <li>Product Number 1</li>
  <li>Product Number 2</li>
  <li>Product Number 3  </li>
  </ul></li>
  <li>Service Number 2
  <ul>
  <li>Product Number 4  </li>
  <li>Product Number 5</li>
  </ul></li>
  <li>Service Number 3</li>
  <li>Service Number 4</li>
  <li>Service Number 5
  <ul>
  <li>Product Number 6</li>
  <li>Product Number 7</li>
  </ul></li>
  </ul>
  
  <p>From the list example above you can see that I am wanting to create a nested list that will form some navigation.  I have a content type called "Services" set up and a content type called "poducts" also created, but I see no way of linking products to services.</p>
  
  <p>Should I even be using custom content types for this? Or would better way to do be go down the route of using taxonomies? If that were the case how can I make a taxonomy link to a product or service page, and not it's own  taxonomy page?</p>
  
  <p>I feel like I talk complete nonsense, essestially I cannot work out an uncomplicated way to create a nested navigation in Drupal.</p>