Are there any resources which, given a Latin or Greek word, reference modern English words derived from the word? I find it much easier to remember a root when I know a word derived from it.
For a specific example, I would like to remember that "Casus belli" means "a case of war". The root
Casus -> Cause is easy to remember, but how shall I remember the meaning of "belli"? Are there any modern English words derived from "belli"?
Though I specifically ask about English, resources to other languages would be welcome in the lack of an English resource.