diff --git a/docs/control-structures.rst b/docs/control-structures.rst
index 525ae5113..8169fb514 100644
--- a/docs/control-structures.rst
+++ b/docs/control-structures.rst
@@ -196,6 +196,7 @@ can still return a value to the caller by use of the ``return`` statement.
     }
 
 .. index:: ! literal suffix; suffix call syntax
+.. _function-calls-suffix-calls:
 
 Suffix Calls
 ------------
@@ -231,6 +232,15 @@ first in order to obtain the two input values.
 See the section on :ref:`calling suffix functions<calling_suffix_functions>` for more information
 on the limitations of this call syntax.
 
+.. note::
+    Suffix calls should not be confused with the application of :ref:`denomination suffixes<denominations>`,
+    which use the same syntax, but simply modify the literal without an actual function call.
+
+    There is only a limited number of denominations and their names cannot be used for literal
+    suffixes.
+    The only exceptions are ``finney`` and ``szabo``, which used to be denominations, but were
+    deprecated, and are now usable as identifiers.
+
 
 .. index:: ! new, contracts;creating
 
diff --git a/docs/units-and-global-variables.rst b/docs/units-and-global-variables.rst
index 936fb1b3b..139f6576e 100644
--- a/docs/units-and-global-variables.rst
+++ b/docs/units-and-global-variables.rst
@@ -5,12 +5,21 @@
 Units and Globally Available Variables
 **************************************
 
+Solidity defines several *denominations*, which can be applied as suffixes to
+:ref:`rational number literals<rational_literals>` to modify the value while still keeping it a literal.
+
+.. note::
+    Denominations should not be confused with :ref:`literal suffixes<literal_suffixes>`, which use
+    the same syntax, but can be defined by the user and result in a
+    :ref:`function call<function-calls-suffix-calls>`.
+
 .. index:: ! wei, ! finney, ! szabo, ! gwei, ! ether, ! denomination;ether
 
 Ether Units
 ===========
 
-A literal number can take a suffix of ``wei``, ``gwei`` or ``ether`` to specify a subdenomination of Ether, where Ether numbers without a postfix are assumed to be Wei.
+A literal number can take a suffix of ``wei``, ``gwei`` or ``ether`` to specify a sub-denomination of
+Ether, where Ether numbers without a postfix are assumed to be Wei.
 
 .. code-block:: solidity
     :force:
@@ -19,7 +28,7 @@ A literal number can take a suffix of ``wei``, ``gwei`` or ``ether`` to specify
     assert(1 gwei == 1e9);
     assert(1 ether == 1e18);
 
-The only effect of the subdenomination suffix is a multiplication by a power of ten.
+The only effect of the sub-denomination suffix is a multiplication by a power of ten.
 
 .. note::
     The denominations ``finney`` and ``szabo`` have been removed in version 0.7.0.