Distinguish between a graph object, and a node object that can also describe a named graph.

Author: gkellogg

common/terms.html

@@ -160,7 +160,8 @@
     is a <a>graph object</a> which does not have an <code>@id</code> <a>member</a>.
     Note that <a>node objects</a> may have a <code>@graph</code> member,
     but are not considered <a>graph objects</a> if they include any other <a>members</a>.
-    A top-level object consisting of <code>@graph</code> is also not a <a>graph object</a>.</dd>
+    A top-level object consisting of <code>@graph</code> is also not a <a>graph object</a>.
+    Note that a <a>node object</a> may also represent a <a>named graph</a> it it includes other properties.</dd>
   <dt><dfn>index map</dfn></dt><dd>
     An <a>index map</a> is a <a>dictionary</a> value of a <a>term</a>
     defined with <code>@container</code> set to <code>@index</code>,

index.html

@@ -1333,9 +1333,12 @@ <h2>Uses of JSON Objects</h2>
       </dl>
     </dd>
     <dt><a>Graph objects</a></dt><dd>
-      A Graph object is much like a <a>node object</a>, except that it defines a <a>named graph</a>.
+      A <a>graph object</a> is much like a <a>node object</a>, except that it defines a <a>named graph</a>.
       See <a class="sectionRef" href="#named-graphs"></a> for more information,
       and <a class="sectionRef" href="#graph-objects"></a> for the normative definition.
+      A <a>node object</a> may also describe a <a>named graph</a>, in addition to other properties
+      defined on the node. The notable difference is that a <a>graph object</a> only describes
+      a <a>named graph</a>.
     </dd>
     <dt><a>Context Definitions</a></dt><dd>
       A Context Definition uses the <a>JSON object</a> form, but is not itself data in a <a>linked data graph</a>.
@@ -9982,7 +9985,7 @@ <h2>Node Objects</h2>
     <h2>Graph Objects</h2>
 
     <p>A <a>graph object</a> represents a <a>named graph</a>, which MAY include
-      include an explicit <a>graph name</a>.
+      an explicit <a>graph name</a>.
       A <a>dictionary</a> is a <a>graph object</a> if
       it exists outside of a JSON-LD <a>context</a>,
       it is not a <a>node object</a>,