Learn when to kiss, hug or fist bump. Britain's Duchess of Cambridge Kate, left, receives a hongi, a traditional Maori welcome, from Maori Elder Hiria Hape at their official welcome ceremony, in ...

These are ways to say "hello" in Hawaiian, Spanish and Hebrew, respectively. But just because you can say something doesn't mean it's always appropriate. On the surface, simple greetings and phrases ...

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