Prophet or Seer, What's the difference?

I heard an elderly prophet say, "The deception of the age is going to be making the simple complex and the complex simple. Part of my assignment is to make the prophetic simplistic, using the word of the Lord as the foundation, so that God's prophets can function effectively in their realm of influence and fulfill the earthly assignment. Biblically a prophet and a seer are the same thing, 1 Samuel 9:9 says, "(Formerly in Israel, if someone went to inquire of God, they would say, "Come, let us go to the seer," because the prophet of today used to be called a seer."