Not uncommon, it is often used in names.
what?
it's raining.
uncommon words:
uncommon words, also known as uncommon words, refer to uncommon or unfamiliar Chinese characters. Since the emergence of Chinese characters, Chinese characters have been constantly developing and changing. The earliest writing in China is Oracle Bone Inscriptions in Shang Dynasty, which is about 3,5 to 4,5 words. Because some of the symbols are not sure whether they are writing or rare words of that era, it has caused great trouble to the statistics of Oracle Bone Inscriptions's word count today.
resources
online Chinese dictionary:/html3/2658.html.