diff --git a/core/lib/Drupal/Core/Annotation/Translation.php b/core/lib/Drupal/Core/Annotation/Translation.php
index 0d6acd1..d8bd8a7 100644
--- a/core/lib/Drupal/Core/Annotation/Translation.php
+++ b/core/lib/Drupal/Core/Annotation/Translation.php
@@ -12,10 +12,11 @@
 /**
  * Defines a translatable annotation object.
  *
- * Some metadata within an annotation needs to be translatable. This class
- * supports that need by allowing both the translatable string and, if
- * specified, a context for that string. This class is essentially a wrapper
- * around the traditional t() function in drupal.
+ * @defgroup translatable Translatable plugin annotations
+ *   Some metadata within an annotation needs to be translatable. This class
+ *   supports that need by allowing both the translatable string and, if
+ *   specified, a context for that string. This class is essentially a wrapper
+ *   around the traditional t() function in drupal.
  *
  * @Annotation
  */
diff --git a/core/lib/Drupal/Core/Entity/Annotation/EntityType.php b/core/lib/Drupal/Core/Entity/Annotation/EntityType.php
index 0487d03..6a719bd 100644
--- a/core/lib/Drupal/Core/Entity/Annotation/EntityType.php
+++ b/core/lib/Drupal/Core/Entity/Annotation/EntityType.php
@@ -94,14 +94,18 @@ class EntityType extends Plugin {
   /**
    * The human-readable name of the type.
    *
-   * @var string
+   * @ingroup translatable
+   *
+   * @var \Drupal\Core\Annotation\Translation
    */
   public $label;
 
   /**
    * The human-readable name of the entity bundles, e.g. Vocabulary.
    *
-   * @var string
+   * @ingroup translatable
+   *
+   * @var \Drupal\Core\Annotation\Translation
    */
   public $bundle_label;