General:
* Negotiation: This is the most direct and common option, referring to the act or process of negotiating itself.
* Discussion: This emphasizes the verbal exchange involved.
* Agreement: This highlights the intended outcome of negotiation.
More specific:
* Compromise: This emphasizes finding a middle ground.
* Bargaining: This emphasizes the exchange of something for something else.
* Concession: This refers to the act of giving something up.
* Diplomacy: This emphasizes skillful negotiation, especially in international relations.
The best option will depend on the context of your sentence.