A katar is a katar till......

[Mercenary]

Originally Posted by Nihl

Well, yes, this is inherent in having two different words that mean two different things. Obviously pata-leafs and pata-swords are not interchangeable words, but that doesn't mean that one can't originate from the other.

One never could be originated from the other.
It is in English "pata" and "patta" sound the same. Because in English there are only one character (and sound) "t". These words have different characters, sounds and the roots of the word: patta-leaf has root "flat", pata-sword has root related to "to strike".