Though the two countries speak the same language, more than 70 years of division have led to vocabulary differences
In the world of North Korean courtship, a person might ask their crush to “go for a walk”. In South Korea, the same couple would go on a “date”. The evening in North Korea could end with the couple eating “eskimos”, while in the South they would snack on “ice cream”.
While North and South Korea technically speak the same language, more than 70 years of division has given rise to a host of differences in vocabulary, especially with words that entered the language after 1945.
Link : Penalty or 11-metre foot kick? North and South Korea work on unified dictionary