What is the difference between "capital" and "capitol"?

[Bichhuong]

In my studying vocabulary, I see two words which are quite similar. And I'm not sure about the difference between them. Would you mind getting it clearly for me?
Thanks a lot. :)

[Skrej]

I suggest you consult dictionaries first, then ask for further clarification if necessary. I think, though, the dictionary will help you most.

capital
capitol
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