Add more entries to the glossary.
Written by Jeff Wheeler for GHOP.
diff --git a/Doc/library/codecs.rst b/Doc/library/codecs.rst
index 5bab2af..c6dc0a3 100644
--- a/Doc/library/codecs.rst
+++ b/Doc/library/codecs.rst
@@ -1119,9 +1119,9 @@
| | | | all conversions. Can be |
| | | | used as the system |
| | | | encoding if no automatic |
-| | | | coercion between byte and |
-| | | | Unicode strings is |
-| | | | desired. |
+| | | | :term:`coercion` between |
+| | | | byte and Unicode strings |
+| | | | is desired. |
+--------------------+---------------------------+----------------+---------------------------+
| unicode_escape | | Unicode string | Produce a string that is |
| | | | suitable as Unicode |