OWordbook is an abbreviation of OOPers wordbook.
This is a wordbook app, NOT a dictionary nor a collection of words for any purposes.
In other words, this app is a notepad specialized to write down words you want to learn.
You can register more than one forms for each word, intended for languages which have many conjugation forms (i.e. romance languages.)
You can arrange the forms by binding them into the rings, and can make as many bindings as you like for each form.