These names are examples of reduplication, a common theme in Australian toponymy, especially in names derived from Indigenous Australian languages such as Wiradjuri.
Reduplication is often used as an intensifier such as "Wagga Wagga" many crows and "Tilba Tilba" many waters.
The phenomenon has been the subject of interest in popular culture, including the song by Australian folk singer Greg Champion (written by Jim Haynes and Greg Champion), Don't Call Wagga Wagga Wagga.
[2] May be derived from an Aboriginal word, Kabi language, kauin kauin, a variant of kutchin indicating red, from the red soil area drained by Kin Kin Creek.
[32] May be derived from a corruption of "millai millai", possibly Yindinji language, indicating a fruit-bearing plant Elaeagnus latifolia.