hanja
Hanja (noun) means a writing system using Han characters that was once used for Korean, especially in older texts.
Etymology
Borrowed from Korean 한자(漢字) (hanja), from Middle Chinese 漢字 (MC xanH dziH, "Chinese character", literally "Han Chinese + character"). It can be compared with Cantonese 漢字 /汉字 (hon³ zi⁶), Japanese 漢字 (kanji), Mandarin 漢字 /汉字 (hànzì) and Vietnamese Hán tự, and is a doublet of kanji and Hanzi.