What Do You Know About Cold Weapons

This morning I was in museum. There were different men -members of the archaeological group and we spoke about cold weapons a little too. We began with katana that is very popular because of PC games as I understood. One girl said she wanted a real katana. We laughed. Everybody knows that real katanas are very rare and expensive things. I said I can gift her a "kinzhal", a sort of national weapon -knife from Caucasus. I have one souvenir at home.

So, I remembered a little story that happend to me when I wanted to pass through the custom of the airport of Sheremetjevo a year ago. That kinzhal was in my trunk. The offcers were suspected to see it on the monitor and called the head-officer. He asked me what it is and I answered the first word I remembered in that moment -"kortik". The officers around me seemd to have heart attacs. Than I remembered the right word and said: It's not kortik, it's kinzhal, souvenir.

Sincerely, for me both are knives. I don't see difference between the kitchen knife, kinzhal and kortik. Knife and knife. But seems there is significant difference for those who understands.

Seems,
kinzhal is a generic word, not only a name for the knife of Caucasus
kortik is a prize knife for militars, marine, a special honoured decoration.
I rememberd one more word about knives as cold weapons,
Jatagan, a long curved turkish knife.

So, I wanted to know if there are other words for these weapons. Here is my research:

keris -a knife of Malaysia. The blade is wavy and they are not used anymore except for ceremonial purposes. (Thanks Footiam, Beautiful World, for information)
stilletto -an italian knife
daga -(maybe italian) knife to stab
khopesh -a knife used in Antient Egipt

Can you help me to make the complet list?

And here is the picture I found in Wikipedia. All these are kinzhals