Pontiff (noun)

1. A high priest or spiritual leader, especially the Pope.
2. A title of respect for a bishop or other high-ranking cleric.

Origin:

The word "pontiff" comes from the latin "pontifex" which means "bridge builder" and was used to refer to the high priest of the roman religion.

Examples:

1. The Pontiff gave a speech on the importance of tolerance and forgiveness.
2. The new pontiff was chosen by the College of Cardinals after the death of the previous Pope.
3. The pontiff's visit to the country was a historic event.
4. The pontiff led the congregation in prayer.
5. As a pontiff, the Pope is considered the leader of the worldwide Catholic Church.