Koreanic language family in the context of "Jeju language"

Korean is the native language for about 81 million people, mostly of Korean descent. It is the national language of both North Korea and South Korea. In the south, the language is known as Hangugeo (South Korean: 한국어) and in the north, it is known as Chosŏnŏ (North Korean: 조선어). Since the turn of the 21st century, Korean popular culture have spread around the world through globalization and cultural exports.

Beyond Korea, the language is recognized as a minority language in parts of China, namely Jilin, and specifically Yanbian Prefecture, and Changbai County. It is also spoken by Sakhalin Koreans in parts of Sakhalin, the Russian island just north of Japan, and by the Koryo-saram in parts of Central Asia. The language has a few extinct relatives which—along with the Jeju language (Jejuan) of Jeju Island and Korean itself—form the compact Koreanic language family. Even so, Jejuan and Korean are not mutually intelligible. The linguistic homeland of Korean is suggested to be somewhere in contemporary Manchuria. The hierarchy of the society from which the language originates deeply influences the language, leading to a system of speech levels and honorifics indicative of the formality of any given situation.

The Jeju people or Jejuans are a subgroup of Koreans native to the Jeju island, which is geographically located in the East China Sea. Administratively, they live in Jeju Province, excluding Chuja Islands, an autonomous self-governing province of South Korea.

Jejuans speak the Jeju language, which is considered to be one of the two branches of the Koreanic language family, as it has no mutual intelligibility with Standard Korean or any other Korean dialects in the Korean Peninsula. Jejuans also have unique cultural traditions that are distinct from mainland Koreans.