No difference. There is no difference between kumquat and kumquat, kumquat looks like mandarin oranges, but the fruit is not as big as a projectile, so it is called "kumquat". Green when not ripe, ripe often golden yellow. Golden bullet, also known as U persimmon (scientific name: Diospyros cathayensis Steward.), evergreen or semi-evergreen small trees, about 10 meters high, the crown is spreading, the branches are cylindrical, dark brown to black brown.