Somyeon, or thin wheat noodles, are used in hot or cold noodles soup such as Janchi-guksu (banquet noodles) and Kong-Guksu (noodles in cold soybean soup). It can also be used for Bibim-Guksu (mixed noodles) and often served with spicy anju (food that accompanies alcohol drink) such as golbaengi-muchim (moon snail salad).

Joongmyun is a slightly thicker noodles that can be used in various ways. Typically, Koreans use this when making certain types of noodles depending on how they want it. For instance, Kimchi Bibim Gaksu is a dish made with thin wheat noodles called Somyeon. If you want a slightly thicker noodles, use Joongmyun.