The name Gyeongin refers to the Seoul

Seoul

Seoul , officially the Seoul Special City, is the capital and largest metropolis of South Korea. A megacity with a population of over 10 million, it is the largest city proper in the OECD developed world...

-Incheon

Incheon

The Incheon Metropolitan City is located in northwestern South Korea. The city was home to just 4,700 people when Jemulpo port was built in 1883. Today 2.76 million people live in the city, making it Korea’s third most populous city after Seoul and Busan Metropolitan City...

 corridor in South Korea

South Korea

The Republic of Korea , , is a sovereign state in East Asia, located on the southern portion of the Korean Peninsula. It is neighbored by the People's Republic of China to the west, Japan to the east, North Korea to the north, and the East China Sea and Republic of China to the south...

, and is used as a name for the Gyeongin railway line

Gyeongin Line

The Gyeongin Line is a railway mainline in South Korea, currently connecting Guro Station in Seoul and Incheon. Passenger transport along the line is integrated into Seoul Subway Line 1.-History:...

, the Gyeongin Expressway

Gyeongin Expressway

The Gyeongin Expressway is the oldest expressway to be built in South Korea. It was initially given the route number 2, but recently renumbered to 120. As with all freeways in South Korea, the Gyeongin is a toll highway.-See also:...

, and the Gyeongin Canal (currently under construction and slated for completion in 2011), all of which link Seoul—the South Korean capital and largest city—to nearby Incheon—the second-largest port and fourth-largest city. The name "Gyeongin" is formed from the first characters in the names "Gyeongseong" (the Korean form of the former Japanese

Japanese language

is a language spoken by over 130 million people in Japan and in Japanese emigrant communities. It is a member of the Japonic language family, which has a number of proposed relationships with other languages, none of which has gained wide acceptance among historical linguists .Japanese is an...

name for Seoul) and "Incheon."