A Minister is a person who performs religious functions such as teaching. A pastor is the religious head of a single church. The minister has to maintain the coordination in the church activities such as in administration, teaching, preaching, ministerial sacraments, etc.
Just so, what is the role of a minister?
A minister is an ordained spiritual leader, who holds prayer services, preaches to people in church, leads worship services on Sundays and on holy days, teaches religion classes, and meets with those seeking personal or spiritual direction.