A national anthem is a patriotic hymn or song adopted by a nation for use on official public or state occasions.
The national anthem of a nation evokes and eulogizes the history, struggles, values and traditions of its people.
A royal anthem is a patriotic song resembling a national anthem, but associated specifically with a monarch or royal dynasty. Royal anthems are usually performed at public appearances by the monarch or during other events of royal connotation. For some countries, the royal anthem is also the national anthem.