This is the 5258th most frequent Russian word.
объединение
Union, association, or integration.
Here, 'объединение' is used to describe the act of joining or combining efforts together.
Объединение усилий нескольких команд привело к успешному завершению проекта.
The unification of efforts of several teams led to the successful completion of the project.
In this context, 'объединение' refers to forming a union or alliance among countries.
Объединение стран в альянсе укрепляет международное сотрудничество.
The union of countries into an alliance strengthens international cooperation.
Here, 'объединение' signifies a group or an entity formed by a collective of individuals.