Tipping is not necessary in Korea because it is already included in the price. Customers tip servers when the customer receives very satisfactory service. While Americans have to tip the waiter for the result of the work. Finally, Koreans have two ways of using the language. They must use respectful language when talking to elders and be polite to others, especially adults, which is very significant for Korean. Casual language is used when they are the same age as friends. However, Americans have a common language, except for a few words like man, sir or please. In conclusion, Korea and America have different social customs and cultures. No one can judge whether one country is better than another. We must realize that everything is done for their saturation. Accepting other cultures and extending our field of thought is