* Relating to or characteristic of a nation: This could be its people, culture, government, or territory.
* Examples: "national anthem", "national identity", "national park", "national holiday"
* Existing or operating throughout a whole nation: This implies a widespread scope within the nation's borders.
* Examples: "national airline", "national broadcasting company", "national election"
* Having the status of belonging to or representing a nation: This refers to a connection to the nation as a whole, often with legal implications.
* Examples: "national citizenship", "national security", "national debt"
In essence, "national" signifies a connection to or representation of a nation in its entirety. It highlights a broader scope and commonality that transcends specific regions or groups within the nation.