Here are some examples:
* Le prochain train: The next train
* La prochaine semaine: Next week
* Le prochain chapitre: The next chapter
* Votre prochain rendez-vous: Your next appointment
It can also mean nearest or closest:
* Le restaurant le plus prochain: The nearest restaurant
* La personne la plus prochaine à moi: The person closest to me
It's a versatile word that can be used in many different contexts!