For those who think they've won some debate by saying "America is a continent!", maybe I can help.
America is a country- I would prefer the term "region", but it is what it is. America is the land and the people of that specific region. Once, it was also a culture; for some, it still may be. Few understand the foundation of that culture anymore, but imagine it was something cheaper that they prefer.
North America is a continent; a land mass- just like South America and Australia are different continents. America is located on the continent of North America, along with Mexico, Canada, Costa Rica, Honduras, and several others.
The US (or "USA") is a government, a criminal organization infesting the country of America on the continent of North America. The US is the greatest enemy America has ever faced. It is opposed to everything America once stood for. Either you love America, or you support the US; trying to straddle that fence is impossible.
Govschool and other schools modeled after govschgool are the reason most people are unable to understand distinctions such as these.