 The distinction at the time was similar to the differences between Latin composition and vernacular prose in Renaissance Europe.Her authorship of these two pieces is supported mainly by the observation that the titles of the two "kasa" pieces, "Song of Woman's Complaint" and "Song of Coloring Nails with Touch-me-not Balsam" are very similar to two verified "hanmun" ("cheolgu" and "koshi" respectively).These claims have in part discredited by recent scholarship by O Haein ("Nansorhon shijip") and Kang Cheongseop ("Moktongga ui pogwon e taehayo").