Nothing much maybe only the federation is a loose join of states or an alliance not a country and a union is one country.
In country names it usually indicates that a country consists of a federation of states.
Unity of a country. Federation usually applies to a group of states coming together to form a unified whole, or government under a single authority.
Yes it is a country. It is officially known as the Russian Federation and has 83 Federal Subjects (states.)
Iran
That is the United Arab Emirates
A federation country is a nation that is composed of multiple semi-autonomous regions or states that share power with a central government. Examples of federation countries include the United States, Canada, India, and Australia. In these countries, the constitution typically outlines the distribution of authority and responsibilities between the national and regional governments.
Malaysia achieved her Independence from Britain on August 31st, 1957 as the Federation of Malay States. Malaysia was formed on 16 September 1963, which gave independence to Singapore (no longer part of Malaysia), Sabah & Sarawak (both Malaysian States)
States and provinces are governmental units within a larger country, nation, or federation.
A federal republic is a federation of states with a republican form of government. A federation is the central government. The states in a federation also maintain the federation. Usage of the term republic is inconsistent but, as a minimum, it means a state or federation of states that does not have a monarch.sources: http://en.wikipedia.org/wiki/Federal_republic
United States Golf Teachers Federation was created in 1989.
United States Federation of Worker Cooperatives was created in 2004.