[big_chungus]

Except no one refers to "America, the continent". It's always North America, South America, The Americas, or possibly Central America (though that's not really a continent). Typically America is the nation. This is doubly true because there is really no other good term for a citizen; "United States Citizen" is verbose and somewhat clinical, and there is no such word as "United Statesian". That's part of what happens when you choose a name for a nation with more than one word.