The union of people or a group is commonly referred to as an "association" or "organization." These terms describe a collective formed for a specific purpose or common interest, such as advocacy, professional collaboration, or social engagement. In a broader sense, the term "community" can also apply to groups of individuals who share common interests or characteristics.
Union
a leader of a union
They are called the European Union. But not all countries that are in the European Union use Euros. And there are some countries who are not in the European Union who use Euros.
A group with nine people is called a nonet.
A group of people is called a crowd
a group or team of intelligent people are called wath
Group of people controlled by the Soviet Union
It's called a group.
Kolhoz / kolkhozIn english, they were called collective farms.
A group of people is often called a "crowd" or a "gathering."
The group of people in the church are called a congregation.
There is no standard collective noun for a group of unions. The noun 'union' can function as a collective noun for a group of people or things, for example, the International Union of Operating Engineers or the Union of Soviet Socialist Republics (USSR).