The art of writing content that ranks high in search engines, such as Google, is all about using the right keywords and phrases. In the case of writing about agreements to stop fighting, you may want to include some synonyms to keep your content fresh and avoid overusing the same phrase over and over again. Here are some options:

1. Truce: This term refers to a temporary cessation of hostilities between two parties. It implies a mutual agreement to cease fighting, usually for a specific period of time, and can apply to conflicts between nations, groups, or individuals.

2. Armistice: Similar to a truce, an armistice is a formal agreement to stop fighting, but it usually involves the ending of a war or conflict. It may also include provisions for a withdrawal of forces or a demilitarized zone.

3. Ceasefire: This is another term that describes a temporary suspension of hostility. It often refers to a situation in which both sides agree to stop firing weapons or engaging in combat.

4. Peace treaty: A peace treaty is a formal agreement between two sides to bring an end to a conflict. It typically includes terms and conditions for the cessation of hostilities, as well as provisions for the resolution of any underlying issues or disputes.

5. Accord: An accord refers to a formal agreement between two parties that outlines the terms of their relationship. It can apply to a wide range of situations, including conflicts, trade deals, and diplomatic agreements.

6. Settlement: A settlement is a resolution of a dispute or conflict through negotiation and compromise. It can include a variety of terms, such as financial compensation, the transfer of land or resources, or an agreement to cease hostilities.

7. Detente: This term refers to a relaxation of tensions between two parties, often used in the context of international relations. It implies a gradual improvement in relations, but not necessarily a formal agreement to stop fighting.

By incorporating these synonyms into your content, you can create a more engaging and varied piece of writing. Additionally, by using a range of related search terms, you can also increase the likelihood that your content will rank well in search engine results pages.