Many. If you count all the types that have ever existed (are they in the world if they're in museums?), it's probably impossible to know. Some are listed in the Wikipedia link below, and the other link is one of many places where you can see pictures.
There are many kinds of Chinese swords. The Butterfly sword is possibly the most famous. The zhanmadao, niuweidao and wodao swords are also very famous.
Yes they do have swords and knives.
It was a Cavalry Sabre.
how many types of guns are there in the world?
swords,canon bombs,
United Cutlery offers many different quality knives of all different types, including swords, machetes, daggers, folding knives, and novelty swords and gear.
A Crown of Swords has 720 pages.
The Eight of Swords has 220 pages.
The Field of Swords has 588 pages.
Swords of Mars has 315 pages.
Kingdom's Swords has 368 pages.
The Swords of Zinjaban has 309 pages.