What is the difference between a natural born citizen and a us citizen?

You are a natural born citizen of the United States if you were born in territory belonging to the United States.

You can still be a naturalized U.S. citizen if you weren't born in the U.S by going through legal procedures, but you can never be a natural born citizen unless you born as one.

The Supreme Court has never ruled on the exact meaning of the phrase "natural born" which appears is the US Constitution as a requirement for the US president.

Persons born in foreign countries with two US citizens as parents are US citizens but it is not known whether they are legally natural born.