This may help you a little: http://www.italki.com/answers/question/65453.htm

In Korea they have special words, which they use in order to address people, depending on their relative age. In their traditional religion they also used funny masks. :-)

I also heard that they avoid using their real names. Unfortunately, I don't know much details about this - never dared to ask any of them about this. Korean culture is definitely very misterious, at least for me. :-)

Why did my answers cause do many negative reaction??? In fact, everyone can learn something about Korean religious masks in Wikipaedia: http://en.wikipedia.org/wiki/Korean_mask This is what I meant. What is wrong? Is Wiki also wrong? Very strange!