If you say about Russia, I shoud say "Santa Clous" or I can say "Ded Moroz"?

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Santa Claus (in the US) and Ded Moroz (in Russia) are similar characters, but they are different. If I was to translate the name "Ded Moroz", I would probably say "Grandfather Frost". (I am an American living in Russia.)

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Hello again!
You can probably say "Ded Moroz" but I don't know if everyone reading it will understand what it is. 
I'd say you can because that is your culture and if you use it right in an English context, I don't see any problem with that ;)

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so, Jerry... What is better "Ded Moroz" or "Grandfether Frost"?

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Who says we don't translate names?

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but if we say "Ded Moroz" is  name, and we don't translate names.... should we say "Grandfather Frost"?

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