Stemming normalizes words:
- Porter stemming
- It's language dependent: snowball
- Several algorithms exist
- pecl/stem
arrival -> arrive
skies -> sky
riding -> ride
rides -> ride
horses -> hors
Alternatively, instead of word analysis you can use "sounds like"
indexing, by using something like soundex or metaphone:
Word Soundex Metaphone
stemming S355 STMNK
peas P200 PS
peace P200 PS
please P420 PLS