Second word is teacher - make clear what God has revealed. It is hard to carefully differentiate between the two words. Perhaps think of the difference between a sermon - which is focused on exhortation and a Bible study in which something might be more fully developed. Teaching appeals largely to the intellect, prophesy to the will. Teaching deals with content, prophesy with implications and application.
Teaching sets a general course of direction, while prophesy corrects a course that has gone awry.
In my sermons I will both teach, and include lots of exhortation. I will preach to the intellect and to the emotions and to the will. But 25 minutes is too small of a diet to really grow. Preaching often has that personal challenge that causes us to say you left preaching and gone to meddlin. Let me meddle just a moment.