diff --git a/shacl12-ui/index.html b/shacl12-ui/index.html
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@@ -387,6 +387,72 @@ <h3>Terminology</h3>
           </dfn>
           .
         </p>
+        <div class="def">
+          <div class="term-def-header">Language Resolution</div>
+          <div>
+            <dfn data-lt="language resolution">Language Resolution</dfn> is the process of determining and ordering the
+            values associated with a given subject-predicate pair, prioritizing the preferred or most relevant language
+            value for display.
+          </div>
+        </div>
+        <div class="def">
+          <div class="term-def-header">Label Resolution</div>
+          <div>
+            <dfn data-lt="label resolution">Label Resolution</dfn> is the process of selecting the most appropriate
+            display label for an RDF resource, or generating a fallback value when no suitable value exists. It
+            applies to both value nodes and properties identified by <code>sh:path</code>, the latter of which is commonly used to label form elements.
+
+            The process includes <a>language resolution</a> and considers labeling-related annotations from the
+            <a>shapes graph</a>, <a>data graph</a>, application environment, and user preferences, to determine the best label for UI presentation.
+          </div>
+        </div>
+        <div class="def">
+          <div class="term-def-header">Property UI Component</div>
+          <div>
+            A <dfn data-lt="property ui component">Property UI Component</dfn> is a combination of <a>constraints</a>
+            across multiple <a>property shapes</a> that share the same <a>property path</a>, <a>focus node</a>, and
+            <a>value nodes</a>. It represents a single field (e.g., a text input, a dropdown) in a form.
+          </div>
+        </div>
+        <div class="def">
+          <div class="term-def-header">Node UI Component</div>
+          <div>
+            A <dfn data-lt="node ui component">Node UI Component</dfn> is generated from a single <a>focus node</a>,
+            typically containing one or more <a>property UI components</a>. It is often derived from one or more
+            <a>node shapes</a> that apply to the <a>focus node</a>.
+          </div>
+        </div>
+        <div class="def">
+          <div class="term-def-header">SHACL Renderer</div>
+          <div>
+            A <dfn data-lt="shacl Renderer">SHACL Renderer</dfn> is a piece of software that processes SHACL
+            <a>shapes</a> and data to dynamically generate a form. A UI that represents the data is generated from one
+            or more <a>node UI components</a>. The SHACL renderer may add additional UI elements, such as a submit
+            button to save changes, a button to toggle between edit and view mode, selectors for <a>focus node</a> and
+            <a>node shape</a>, or messages from the <a>validation report</a>.
+
+            Further functionality the SHACL renderer may provide:
+            <ul>
+              <li>State management for the mode (edit/view) and changes</li>
+              <li>Managing widgets and widget selection logic</li>
+              <li>The target selection logic</li>
+              <li>Communication with the persistence layer</li>
+            </ul>
+
+            The inputs:
+            <ul>
+              <li><a>Focus node</a> IRI (optional, some implementations may provide a logic or UI to determine the root
+                node)</li>
+              <li><a>Node shape</a> IRI (optional, some implementations may provide a logic or UI to determine a
+                matching shape)</li>
+              <li><a>Data graph</a></li>
+              <li><a>Shapes graph</a></li>
+            </ul>
+
+            If both the focus node and node shape are provided, the SHACL renderer operates in manual mode. Otherwise,
+            when logic is applied to determine one or both values, it operates in automatic mode.
+          </div>
+        </div>
       </section>
 
       <section id="conventions">