CJK characters
Chinese is written almost exclusively in Chinese characters. It requires over 3,000 characters for general literacy, but up to 40,000 characters for reasonably complete coverage. Japanese uses fewer characters — general literacy in Japanese can be expected with 1,945 characters. The use of Chinese characters in Korea is becoming increasingly rare, although idiosyncratic use of Chinese characters in proper names requires knowledge (and therefore availability) of many more characters. However, even today, students in South Korea are taught 1,800 characters.
Chinese characters
Chinese characters should not be confused with Chinese words, as the majority of modern Chinese words, unlike their Old Chinese and Middle Chinese counterparts, are written with two or more characters, each character representing one syllable and/or morpheme. Knowing the meanings of the individual characters of a word will often allow the general meaning of the word to be inferred, but this is not always the case.