What is a group of Nations called?

A group of nations is commonly called a Family. Other collective nouns you may see include Alliance and Government.

Collective nouns are words used to describe a group of people, animals, or things. When it comes to nations, collective nouns are used to denote the entirety or a specific grouping of citizens belonging to a particular country. These unique expressions serve to capture the unity, diversity, or particular characteristics associated with the nation's population. One popular collective noun for a nation is "citizens." This term encompasses all the individuals, regardless of their occupations, roles, or geographical locations, who are part of a specific country. Similarly, "population" can be used to refer to the entire inhabitants of a nation, emphasizing the numerical representation of its residents. Other collective nouns for nations may highlight particular qualities or features. For instance, "melting pot" is a metaphorical phrase often applied to culturally diverse nations such as the United States. This unique expression captures the idea that individuals from various ethnicities, cultures, and backgrounds meld together, forming a harmonious whole that defines the spirit of the nation. Alternatively, "nation-states" is a collective noun frequently used to describe sovereign states where a unique cultural or ethnic group predominantly populate their own designated territory. This term signifies the dual existence of a unified nation and an independent state, reflecting the intricate relationship among people and governance. Some collective nouns may emphasize a nation's history, geography, or political structures. For example, "the Union" has been used for national groups composed of multiple states or regions, emphasizing the unification of diverse entities under a single governing body, as seen in "The Union of Soviet Socialist Republics." In conclusion, collective nouns for nations are versatile linguistic tools used to capture various aspects of a particular country. They define the broader population, showcase diverse cultures, describe historical and political structures, and encapsulate the spirit of the nation represented.