Joint effort can be described as the combined effort of two or more people working towards a common goal. Synonyms for joint effort include teamwork, collaboration, cooperation, partnership, unity, and alliance.
Teamwork refers to the willingness to work together as a team to achieve a goal. Collaboration emphasizes the act of working together in a mutually beneficial way. Cooperation involves the willingness to help each other out in order to achieve a common goal. Partnership denotes a formal agreement between two parties working towards a common objective, while unity describes the state of being united or forming a single entity. An alliance can be defined as a strategic partnership formed to achieve a shared objective.