Peacemaker (noun)

1. A person or thing that promotes or maintains peace and reconciliation.
2. A mediator or arbitrator in a dispute.

Origin:

From the idea of someone who brings or maintains peace.

Examples:

1. The peacemaker worked tirelessly to bring the warring factions to the negotiating table.
2. He was considered a great peacemaker in the community.
3. The new leader is seen as a peacemaker who can bring stability to the region.
4. The peacemaker helped to resolve the dispute between the two countries.
5. The United Nations often acts as a peacemaker in international conflicts.