Parts of speech

[bennn]

Add part-of-speech to word database.

This will be useful for spellchecking; instead of adding definitions for words like "cats" and "books" we can just add a rule like word ::= noun + 's'.

[bennn]

It's maybe better to just brute-force plurals. idk.

Another idea, if the word's not in the DB do a small heuristic search. Like if the word ends with an s, try removing it.