18 The most uncommon words:, Yan, Yan, Yan, Yan, Yan, Yan, Yan, Yan, Zhu. Rare words are a kind of Chinese vocabulary, also known as uncommon words, which refer to uncommon or uncommon Chinese characters. There is no standard for rare words, so we can't use Xinhua dictionary to frame them, because there are also many words in the dictionary that Chinese graduates don't know, and there are also many words that can't be spelled in the computer, because there are too many Chinese characters. Like other languages, most words in the dictionary are not commonly used. Taking recognized Chinese dictionaries as samples, we have collected more than 50,000 words, but there are not many commonly used Chinese characters.