If you want to express the action of making peace:
* Reconcile: To restore friendly relations.
* Mediate: To act as a go-between to settle a dispute.
* Harmonize: To bring into agreement or harmony.
* Conciliate: To appease or win over.
* Settle: To resolve a conflict or dispute.
* Unite: To bring together different groups or factions.
* Bridge: To build a connection between opposing sides.
* Calming: To make peaceful or tranquil.
If you want to express the state of being peaceful:
* Relax: To become less tense or anxious.
* Soothe: To calm or comfort.
* Tranquilize: To make calm and peaceful.
* Quiesce: To be quiet or still.
* Rest: To cease activity and relax.
Other verbs related to the concept of peace:
* Abolish: To do away with something that causes conflict, like war.
* Foster: To promote and encourage peace.
* Preserve: To maintain peace and stability.
* Promote: To encourage peace and understanding.
* Cultivate: To develop peace and harmony.
The best choice depends on the specific context and the nuance you want to convey.