diff --git a/core/lib/Drupal/Core/Entity/EntityType.php b/core/lib/Drupal/Core/Entity/EntityType.php
index 110fcee..a6b11ce 100644
--- a/core/lib/Drupal/Core/Entity/EntityType.php
+++ b/core/lib/Drupal/Core/Entity/EntityType.php
@@ -187,6 +187,11 @@ class EntityType implements EntityTypeInterface {
   protected $label = '';
 
   /**
+   * A description of the entity type.
+   */
+  protected $description = '';
+
+  /**
    * A callable that can be used to provide the entity URI.
    *
    * @var callable|null
@@ -641,6 +646,13 @@ public function getLabel() {
   /**
    * {@inheritdoc}
    */
+  public function getDescription() {
+    return $this->description;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
   public function getLowercaseLabel() {
     return Unicode::strtolower($this->getLabel());
   }
diff --git a/core/lib/Drupal/Core/Entity/EntityTypeInterface.php b/core/lib/Drupal/Core/Entity/EntityTypeInterface.php
index e655df7..4c65696 100644
--- a/core/lib/Drupal/Core/Entity/EntityTypeInterface.php
+++ b/core/lib/Drupal/Core/Entity/EntityTypeInterface.php
@@ -609,6 +609,14 @@ public function getDataTable();
   public function getLabel();
 
   /**
+   * Returns the entity type's description
+   *
+   * @return string
+   *   The entity type's description.
+   */
+  public function getDescription();
+
+  /**
    * Returns the lowercase form of the human-readable entity type name.
    *
    * @return string
diff --git a/core/modules/aggregator/src/Entity/Feed.php b/core/modules/aggregator/src/Entity/Feed.php
index d70ec7d..b1c4721 100644
--- a/core/modules/aggregator/src/Entity/Feed.php
+++ b/core/modules/aggregator/src/Entity/Feed.php
@@ -20,6 +20,7 @@
  * @ContentEntityType(
  *   id = "aggregator_feed",
  *   label = @Translation("Aggregator feed"),
+ *   description = @Translation("Feeds provide syndicated content (RSS, RDF, and Atom feeds.)"),
  *   controllers = {
  *     "storage" = "Drupal\aggregator\FeedStorage",
  *     "view_builder" = "Drupal\aggregator\FeedViewBuilder",
diff --git a/core/modules/aggregator/src/Entity/Item.php b/core/modules/aggregator/src/Entity/Item.php
index f41080a5..b7f179f 100644
--- a/core/modules/aggregator/src/Entity/Item.php
+++ b/core/modules/aggregator/src/Entity/Item.php
@@ -21,6 +21,7 @@
  * @ContentEntityType(
  *   id = "aggregator_item",
  *   label = @Translation("Aggregator feed item"),
+ *   description = @Translation("An item from a syndicated feed."),
  *   controllers = {
  *     "storage" = "Drupal\aggregator\ItemStorage",
  *     "view_builder" = "Drupal\aggregator\ItemViewBuilder",
diff --git a/core/modules/block_content/src/Entity/BlockContent.php b/core/modules/block_content/src/Entity/BlockContent.php
index b004261..6da218b 100644
--- a/core/modules/block_content/src/Entity/BlockContent.php
+++ b/core/modules/block_content/src/Entity/BlockContent.php
@@ -19,6 +19,7 @@
  * @ContentEntityType(
  *   id = "block_content",
  *   label = @Translation("Custom Block"),
+ *   description = @Translation("Blocks are custom pieces of content."),
  *   bundle_label = @Translation("Custom Block type"),
  *   controllers = {
  *     "storage" = "Drupal\block_content\BlockContentStorage",
diff --git a/core/modules/comment/src/Entity/Comment.php b/core/modules/comment/src/Entity/Comment.php
index edde6c3..76a8bab 100644
--- a/core/modules/comment/src/Entity/Comment.php
+++ b/core/modules/comment/src/Entity/Comment.php
@@ -22,6 +22,7 @@
  * @ContentEntityType(
  *   id = "comment",
  *   label = @Translation("Comment"),
+ *   description = @Translation("Comments are responses to node content."),
  *   bundle_label = @Translation("Content type"),
  *   controllers = {
  *     "storage" = "Drupal\comment\CommentStorage",
diff --git a/core/modules/contact/src/Entity/Message.php b/core/modules/contact/src/Entity/Message.php
index 9cf50bc..be9ef84 100644
--- a/core/modules/contact/src/Entity/Message.php
+++ b/core/modules/contact/src/Entity/Message.php
@@ -18,6 +18,7 @@
  * @ContentEntityType(
  *   id = "contact_message",
  *   label = @Translation("Contact message"),
+ *   description = @Translation("Contact messages are contact form submissions."),
  *   controllers = {
  *     "storage" = "Drupal\Core\Entity\ContentEntityNullStorage",
  *     "view_builder" = "Drupal\contact\MessageViewBuilder",
diff --git a/core/modules/file/src/Entity/File.php b/core/modules/file/src/Entity/File.php
index 48745d8..3fc9ad1 100644
--- a/core/modules/file/src/Entity/File.php
+++ b/core/modules/file/src/Entity/File.php
@@ -21,6 +21,7 @@
  * @ContentEntityType(
  *   id = "file",
  *   label = @Translation("File"),
+ *   description = @Translation("Files that are managed within Drupal."),
  *   controllers = {
  *     "storage" = "Drupal\file\FileStorage",
  *     "access" = "Drupal\file\FileAccessControlHandler",
diff --git a/core/modules/menu_link_content/src/Entity/MenuLinkContent.php b/core/modules/menu_link_content/src/Entity/MenuLinkContent.php
index 11f1d12..0915290 100644
--- a/core/modules/menu_link_content/src/Entity/MenuLinkContent.php
+++ b/core/modules/menu_link_content/src/Entity/MenuLinkContent.php
@@ -20,6 +20,7 @@
  * @ContentEntityType(
  *   id = "menu_link_content",
  *   label = @Translation("Custom menu link"),
+ *   description = @Translation("Custom menu links that belong to a menu."),
  *   controllers = {
  *     "storage" = "Drupal\Core\Entity\ContentEntityDatabaseStorage",
  *     "access" = "Drupal\menu_link_content\MenuLinkContentAccessControlHandler",
diff --git a/core/modules/node/src/Entity/Node.php b/core/modules/node/src/Entity/Node.php
index c57e3af..9435bb2 100644
--- a/core/modules/node/src/Entity/Node.php
+++ b/core/modules/node/src/Entity/Node.php
@@ -23,6 +23,7 @@
  *   id = "node",
  *   label = @Translation("Content"),
  *   bundle_label = @Translation("Content type"),
+ *   description = @Translation("Nodes are individual pieces of content."),
  *   controllers = {
  *     "storage" = "Drupal\node\NodeStorage",
  *     "view_builder" = "Drupal\node\NodeViewBuilder",
diff --git a/core/modules/shortcut/src/Entity/Shortcut.php b/core/modules/shortcut/src/Entity/Shortcut.php
index 706ef0a..1fcfb8d 100644
--- a/core/modules/shortcut/src/Entity/Shortcut.php
+++ b/core/modules/shortcut/src/Entity/Shortcut.php
@@ -21,6 +21,7 @@
  * @ContentEntityType(
  *   id = "shortcut",
  *   label = @Translation("Shortcut link"),
+ *   description = @Translation("Shortcut links provide quick administrative access."),
  *   controllers = {
  *     "access" = "Drupal\shortcut\ShortcutAccessControlHandler",
  *     "form" = {
diff --git a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTest.php b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTest.php
index 2470c8c..68107e5 100644
--- a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTest.php
+++ b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTest.php
@@ -20,6 +20,7 @@
  * @ContentEntityType(
  *   id = "entity_test",
  *   label = @Translation("Test entity"),
+ *   description = @Translation("Test entities are the base for other test entities."),
  *   controllers = {
  *     "list_builder" = "Drupal\entity_test\EntityTestListBuilder",
  *     "view_builder" = "Drupal\entity_test\EntityTestViewBuilder",
diff --git a/core/modules/taxonomy/src/Entity/Term.php b/core/modules/taxonomy/src/Entity/Term.php
index e50e3a0..1c89890 100644
--- a/core/modules/taxonomy/src/Entity/Term.php
+++ b/core/modules/taxonomy/src/Entity/Term.php
@@ -19,6 +19,7 @@
  * @ContentEntityType(
  *   id = "taxonomy_term",
  *   label = @Translation("Taxonomy term"),
+ *   description = @Translation("Taxonomy terms allow categorization of content."),
  *   bundle_label = @Translation("Vocabulary"),
  *   controllers = {
  *     "storage" = "Drupal\taxonomy\TermStorage",
diff --git a/core/modules/user/src/Entity/User.php b/core/modules/user/src/Entity/User.php
index ffc9dfc..a39d5ab 100644
--- a/core/modules/user/src/Entity/User.php
+++ b/core/modules/user/src/Entity/User.php
@@ -23,6 +23,7 @@
  * @ContentEntityType(
  *   id = "user",
  *   label = @Translation("User"),
+ *   description = @Translation("Users are accounts in the Drupal site."),
  *   controllers = {
  *     "storage" = "Drupal\user\UserStorage",
  *     "access" = "Drupal\user\UserAccessControlHandler",