CT1"
><H1
CLASS="SECT1"
><A
NAME="TEXTSEARCH-DICTIONARIES"
>12.6. Dictionaries</A
></H1
><P
>   Dictionaries are used to eliminate words that should not be considered in a
   search (<I
CLASS="FIRSTTERM"
>stop words</I
>), and to <I
CLASS="FIRSTTERM"
>normalize</I
> words so
   that different derived forms of the same word will match.  A successfully
   normalized word is called a <I
CLASS="FIRSTTERM"
>lexeme</I
>.  Aside from
   improving search quality, normalization and removal of stop words reduce the
 