* duc (Latin) - to lead, to guide
* conduct - to lead, to direct, to manage
* educate - to lead out, to train, to teach
* induce - to lead into, to persuade
* produce - to bring forth, to create
* reduce - to lead back, to lessen
* seduce - to lead astray, to tempt
* introduce - to lead in, to present
* deduce - to lead from, to infer
These are just a few examples, and there are many more words that can be formed using these roots.