The closest English equivalent is viceroy; a shogun is an official who rules on behalf of the emperor (as, in English, the viceroy rules on behalf of the king).
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I don't think that's all that accurate... while a shogun rules "on behalf" of the emperor on paper, in practice it's anything but. The emperor is simply a figurehead with no real power, who exists solely on the generosity of those he's "ruling". A better way to look at it would be the same way the portugese did when they first got to Japan. They called the emperor the pope (because he had huge influence but no actual power), and they called the shogun the emperor (since he was in fact the warlord in charge of the entire country).
A shogunate is the government of the shogun. The shogun was a Japanese hereditary military dictator from 1192 to 1867.
Shogun!
If you mean shogun, typically pronounced in English as "show-guhn," the correct Japanese pronunciation is "show-goon."
Shogun
japanese warriors
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shogun, tonosama
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kill people