diff --git a/doc/src/sgml/ref/create_foreign_table.sgml b/doc/src/sgml/ref/create_foreign_table.sgml
index f9477efe58..9674670e04 100644
--- a/doc/src/sgml/ref/create_foreign_table.sgml
+++ b/doc/src/sgml/ref/create_foreign_table.sgml
@@ -69,8 +69,8 @@ CHECK ( <replaceable class="parameter">expression</replaceable> ) [ NO INHERIT ]
    myschema.mytable ...</literal>) then the table is created in the specified
    schema.  Otherwise it is created in the current schema.
    The name of the foreign table must be
-   distinct from the name of any other foreign table, table, sequence, index,
-   view, or materialized view in the same schema.
+   distinct from the name of any other relation (table, sequence, index, view,
+   materialized view, or foreign table) in the same schema.
   </para>
 
   <para>
diff --git a/doc/src/sgml/ref/create_index.sgml b/doc/src/sgml/ref/create_index.sgml
index cc484d5b39..89a4d746f6 100644
--- a/doc/src/sgml/ref/create_index.sgml
+++ b/doc/src/sgml/ref/create_index.sgml
@@ -202,7 +202,10 @@ CREATE [ UNIQUE ] INDEX [ CONCURRENTLY ] [ [ IF NOT EXISTS ] <replaceable class=
        <para>
         The name of the index to be created.  No schema name can be included
         here; the index is always created in the same schema as its parent
-        table.  If the name is omitted, <productname>PostgreSQL</productname> chooses a
+        table.  The name of the index must be distinct from the name of any
+        other relation (table, sequence, index, view, materialized view, or
+        foreign table) in that schema.
+        If the name is omitted, <productname>PostgreSQL</productname> chooses a
         suitable name based on the parent table's name and the indexed column
         name(s).
        </para>
diff --git a/doc/src/sgml/ref/create_materialized_view.sgml b/doc/src/sgml/ref/create_materialized_view.sgml
index d8c48252f4..0d2fea2b97 100644
--- a/doc/src/sgml/ref/create_materialized_view.sgml
+++ b/doc/src/sgml/ref/create_materialized_view.sgml
@@ -77,7 +77,9 @@ CREATE MATERIALIZED VIEW [ IF NOT EXISTS ] <replaceable>table_name</replaceable>
     <listitem>
      <para>
       The name (optionally schema-qualified) of the materialized view to be
-      created.
+      created.  The name must be distinct from the name of any other relation
+      (table, sequence, index, view, materialized view, or foreign table) in
+      the same schema.
      </para>
     </listitem>
    </varlistentry>
diff --git a/doc/src/sgml/ref/create_sequence.sgml b/doc/src/sgml/ref/create_sequence.sgml
index e4085804a4..20bdbc002f 100644
--- a/doc/src/sgml/ref/create_sequence.sgml
+++ b/doc/src/sgml/ref/create_sequence.sgml
@@ -46,8 +46,9 @@ CREATE [ TEMPORARY | TEMP ] SEQUENCE [ IF NOT EXISTS ] <replaceable class="param
    specified schema.  Otherwise it is created in the current schema.
    Temporary sequences exist in a special schema, so a schema name cannot be
    given when creating a temporary sequence.
-   The sequence name must be distinct from the name of any other sequence,
-   table, index, view, or foreign table in the same schema.
+   The sequence name must be distinct from the name of any other relation
+   (table, sequence, index, view, materialized view, or foreign table) in
+   the same schema.
   </para>
 
   <para>
diff --git a/doc/src/sgml/ref/create_table.sgml b/doc/src/sgml/ref/create_table.sgml
index 473a0a4aeb..61a584fa34 100644
--- a/doc/src/sgml/ref/create_table.sgml
+++ b/doc/src/sgml/ref/create_table.sgml
@@ -124,8 +124,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
    schema.  Otherwise it is created in the current schema.  Temporary
    tables exist in a special schema, so a schema name cannot be given
    when creating a temporary table.  The name of the table must be
-   distinct from the name of any other table, sequence, index, view,
-   or foreign table in the same schema.
+   distinct from the name of any other relation (table, sequence, index, view,
+   materialized view, or foreign table) in the same schema.
   </para>
 
   <para>
diff --git a/doc/src/sgml/ref/create_view.sgml b/doc/src/sgml/ref/create_view.sgml
index 4b5b1cf795..bf03287592 100644
--- a/doc/src/sgml/ref/create_view.sgml
+++ b/doc/src/sgml/ref/create_view.sgml
@@ -52,8 +52,8 @@ CREATE [ OR REPLACE ] [ TEMP | TEMPORARY ] [ RECURSIVE ] VIEW <replaceable class
    schema.  Otherwise it is created in the current schema.  Temporary
    views exist in a special schema, so a schema name cannot be given
    when creating a temporary view. The name of the view must be
-   distinct from the name of any other view, table, sequence, index or foreign table
-   in the same schema.
+   distinct from the name of any other relation (table, sequence, index, view,
+   materialized view, or foreign table) in the same schema.
   </para>
  </refsect1>