collaboration · noun /kəˌlæb.əˈreɪ.ʃən/
collaboration
C1 C or U when two or more people work together to create or achieve the same thing, or a product of this
Dictionary example:
The show was a result of collaboration between several museums.
Learner example:
On the other hand, we encourage competition on the basis of team collaboration, to optimize the HR resources in the group, and maximize [the] individual's potential. (International English Language Testing System; C1; Chinese)