[ariel]

Kind of continuing ( this is more for Fernando).
Three Indian swords of mine.
Top to bottom:

Classical " Stone-Rawson-Pant's" Khanda

Khanda's old variant ( predecessor?), 18th century the latest, more likely 14-16th: it traditionally goes as Patissa in European sources.

The lowest one is Firangi with a European rapier blade ( see markings). In Deccan it was called Dhup, in Northern India it was Asa Shamshir.

And this opens yet another can of worms: apparently, the word " rapier" was used in Germany, whereas in Italy, Spain and France the very same sword was called spada, espada and epee ( all of which meant simply " sword" in their respective languages).
These cut-and-thrust weapons ( broadswords?) were popular during the late Renaissance times, but in ~ 17-18th centuries got out of fashion and were replaced by a purely thrusting smallsword ( "court sword", "dress sword"),with a needle-like blade based on newer fencing systems. Despite being still called rapiers, they were not suitable for Indian use where a cut was the king. A minor modification of the smallsword's blade gave birth to Colichemard. Having deeply blued, almost black, handle the same smallsword was called in Germany Trauerdegen ( "mourning sword"), which is still in use in Northern Germany during funeral processions.

The bottom line, not only in India, but in Europe as well one encounters same weapon called by different names depending on the language, location, intended function etc.

Likely, the same principle was operating in India with Jamadhar, Katar, Katara, Narsing-Moth and Maustika . Bich'hwa, Baku and Vinchu are established examle. Probably, Chillanum and Jamadhar Katari might have followed the same suit.
Sorry for digressing from the topic.