Are there any libraries or code bases for making language / translation based apps?

So I am developing a language generator /translator app for table top gaming, and I want to be able to connect root words, for example if you have read, and reading, you get something like foo and foo'bar instead of something like foo and gurbanguly.

Are there any sort of code bases or libraries or what not that I could tap into that would allow me to do this automatically? Ie allow my software to recognize linked words etc, instead of me having to find some manual way for it?

Or would I have to make some sort of user manual system? One that allows a user to go in to their "dictionary" and click a word then click "associate > with root" or something like that? Maybe a "see all associated words" as well?

Then in either case I'd have to have a system of some sort for handling verbs or nouns etc etc etc

Thanks for the help!