diff --git a/core/modules/field_ui/field_ui.links.menu.yml b/core/modules/field_ui/field_ui.links.menu.yml
index 1d3fdb0..8487cfa 100644
--- a/core/modules/field_ui/field_ui.links.menu.yml
+++ b/core/modules/field_ui/field_ui.links.menu.yml
@@ -6,18 +6,18 @@ field_ui.list:
 
 field_ui.display_mode:
   title: 'Display modes'
-  description: 'Configure what displays are available for your content and forms.'
+  description: 'Configure display modes, which include view modes (different ways to view entities) and form modes (different ways to edit entities).'
   route_name: field_ui.display_mode
   parent: system.admin_structure
 
 field_ui.entity_view_mode_list:
   title: 'View modes'
-  description: 'Manage custom view modes.'
+  description: 'Configure view modes to display content differently for different situations; for example, Full content or Teaser.'
   route_name: field_ui.entity_view_mode_list
   parent: field_ui.display_mode
 
 field_ui.entity_form_mode_list:
   title: 'Form modes'
-  description: 'Manage custom form modes.'
+  description: 'Configure form modes to edit content differently for different situations; for example, User edit or User register.'
   route_name: field_ui.entity_form_mode_list
   parent: field_ui.display_mode
diff --git a/core/modules/field_ui/field_ui.module b/core/modules/field_ui/field_ui.module
index 5bce9dd..12f2e29 100644
--- a/core/modules/field_ui/field_ui.module
+++ b/core/modules/field_ui/field_ui.module
@@ -56,6 +56,17 @@ function field_ui_help($route_name, RouteMatchInterface $route_match) {
 
     case 'field_ui.list':
       return '<p>' . t('This list shows all fields currently in use for easy reference.') . '</p>';
+    
+    case 'entity.display_mode':
+      return '<p>' . t('Display modes include view modes (used to view content differently for different situations) and form modes (used to make different entity editing forms for different situations).') . '</p>';
+
+    // View modes.
+    case 'entity.view_mode_list':
+      return '<p>' . t('Use view modes to display content differently for different situations; for example, \'Full content\' or \'Teaser\'.') . '</p>';
+
+    // Form modes.
+    case 'entity.form_mode_list':
+      return '<p>' . t('Use form modes to edit content differently for different situations; for example, \'User edit\' or \'User register\'.') . '</p>';
   }
 }