The media recently announced that BYU President Cecil O. Samuelson will be “replaced” by Kevin J Worthen. People “succeed” people. You “replace” parts in a machine. An individual has characteristics, both good and bad, which are not replaced by another individual. So when someone is released from a position, a successor is appointed.
Samuelson has been a great asset to the university, and Worthen will most certainly leave his mark on the institution as well. Then, in time, he will be succeeded.