Soba is made with buckwheat noodles, taro root, egg whites etc.

Udon is made from wheat dough and it is usually served with a hot soy-sauce flavored broth.

You can eat soba and udon at Sobaya (Soba shop), restaurants or "tachigui shop" (stand-up counter) at stations. You have to stand while eating at such a shop but you are served very quickly and cheaper than you eat at restaurants.

Ramen is originally comes from the Chinese lao-men, a kind of Chinese noodle. Ramen is the popular Chinese noodle served in Japan and great amount of ramen shops are found throughout Japan. It has soy-sauce based soup (shouyu ramen), salt based soup (shio ramen) and miso based soup (miso ramen).