2. Korean vocabulary can be divided into proprietary words, Chinese characters and foreign words. Seoul dialect and Pingrang dialect used to be two dialects of the same language. However, due to the interruption of communication between South Korea and North Korea and the different political systems of the two countries, a large number of new words in modern Seoul dialect, especially western-style loanwords mainly from the United States, are absent or written differently in modern Pyongyang dialect. Apart from new words, Seoul dialect and Pingrang dialect are only phonetic differences. Although there are serious obstacles in communication between the two sides, they can understand and reasonably express the meaning of words. Practical grammar, idioms, etc. Most of them are based on Seoul standard pronunciation.