What's the difference between singing dove and Creary?

Different sources, different categories.

Ming Geqin is a musical instrument in China, known as China's mini four-string, and ukulele is a western musical instrument, belonging to a kind of guitar. The singing pigeon piano is a new musical instrument. It combines the essence of Chinese and western plucked instruments. It is short, light and easy to carry, so it is gradually popularized by the public and suitable for all people. At present, the popularity in primary and secondary schools has increased, and it has become a new classroom instrument.

Hawaiian mini guitar (ukulele) is usually translated as ukulele in China, Hongkong and Taiwan Province, and it is a four-string plucked instrument in Hawaii. It was invented in Portugal and prevailed in Hawaii, belonging to the guitar family.