The author examines the characteristics of the cultural language (CL) of North Korea, by analyzing the daily newspaper Lotong sinmwun , and compares it to the standard language (SL) of South Korea. The article compares data from the two languages on the basis of form, meaning, and usage, and examines linguistic hierarchies and units ranging from phonemes to morphemes, words, and sentences. The data on form, meaning, and usage support a claim of homogeneity rather than heterogeneity between the two languages, and the comparison of phonemes, morphemes, words, and sentences reveals greater similarities than differences, although some phonological rules apply differently in the North Korean data, particularly the rule preserving initial liquid distinction. In addition, morphemic combination is more free in the North Korean data, which also shows a wider boundary of word acceptance and a use of longer sentences.