Koreans once used Chinese characters for writing. However, in the 15th century, they developed a national writing system called Hangui that is still used today. Korean words have special endings to use when speaking to an elder or one to whom you owe respect. These endings are called honorifics.
In Korea, never motion people to come toward you with the palm of your hand facing upwards. This gesture is used to command a dog so it is rude to use it with people. To signal a person to approach you to extend your arm with the palm facing downward and wave your hand. Left-handed people might find it difficult to live in Korea as one must always remember to use the right hand to give something to someone. Dishes at the dining table are always passed with the right hand. Like most Asian nations, Koreans avoid touching so hugging is not acceptable.