chữ đơn

Etymology
🇰🇲.

Noun

 * 1)  single characters that were borrowed for their sound, a category of  where each character is borrowed for their phonetics, "simple phonograms"; this was one of the main components in Nôm texts alongside semantophonograms.
 * 2) * Chỉ nam ngọc âm giải nghĩa (指南玉音解義)
 * 3)  simplified characters
 * 1)  simplified characters