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The word federal refers to the federal government, or the largest form of government in the United States. It can also refer to taxes which are paid to the federal government or people who work for the federal government.
The central government of the US is the Federal government.
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The head of the federal government is the president.
union government.
The national government can mean the president, the House, the Senate, Congress, or the Supreme Court. National government can also refer to the combination of all parts of the government.
When used correctly, the word "federal" (as in "federal system") refers to the division of political power between the national government and the state governments. However, people use the word "federal" as a synonym for the word "national." Therefore, when people use the phrase, "Today, the federal government decided...." they are (usually) referring to the national government and not the division of power between the national and state governments. This is an example of a technical term in political science being incorrectly used.
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