A Korean name consists of a family name followe by a given name, as used by the Korean people in both North Korea and South Korea. In the Korean language, 'ireum' usually refers to the family name (seong) and given name (myeong) together. A long history of the use of family names has caused surname extinction. There are only about 250 Korean family names currently in use, and the three most common (Kim, Lee, and Park) account for nearly half of the population.