as suspected, it's a 'knife'
we as collectors are a lot more anal about assigning labels, which tend to gather momentum as more people use them, gaining a life of their own to the point where if i were to call it a 'pisau' (also essentially means 'knife') i'd provoke a storm of comment. i imagine a 'normal' (non-collector) native from the area would if shown a 'choora' would still call it a 'pisau'.