The developers are pretty aware that the name of the item is a problem. But, since it's used in the game, and it's a brand new thing, they chose to name it like this. I'm not really sure why they did this.

[Instructions]

You need to download the application, and install the newest version of Wooden Longsword at the Kingdom Come on your device. You can do so by downloading the.zip file from the website. You need to open it, and then you can start the installation.

After that, you need to open the game, and then you can start playing.