Stemming reduces related words to a common root form. For instance, "horse",
"horses", and "horsing" all become "hors". Most commonly, stemming is deployed
as part of a search application, allowing searches for a given term to match
documents which contain other forms of that term.

This module is very similar to Lingua::Stem -- however, Lingua::Stem is pure
Perl, while Lingua::Stem::Snowball is an XS module which provides a Perl
interface to the C version of the Snowball stemmers.
(http://snowball.tartarus.org).