Originally Posted by A. G. Maisey
Which Neka book is that Jean?
At your prompt --- ie, your mention of "the Neka book" (saved me searching) --- I opened up "Keris Bali Bersejarah", page 126, and I cannot find any mention of varying terminology in Bali & Lombok. That is not to say there is not, of course. There could be varying terminology if we walk from one side of the road to the other.
In the Lombok reference book from Djelenga (published in 2000), he calls these hilts kusia also called kocet kocetan on page 293, but on page 317 he calls them kusia only.
And in his former (smaller) book published in 1993, he calls them kusia only (page 90). So it seems that the term kusia is more common in Lombok.
And despite what Neka says on page 126, all the hilts which he shows in his book are called kocet-kocetan and not kusia...