Here's why:
* Green Color: Praseodymium salts produce a beautiful green color when dissolved in water, hence the "prasios" part.
* Twin Element: Praseodymium was originally discovered as part of a mixture with another element, neodymium. These two elements were initially thought to be a single element, hence the "didymos" part.
The name "praseodymium" was coined in 1885 by Carl Auer von Welsbach, who isolated the element and recognized its distinct green color.