Below you will find a brief history or detail of weapons that where used by the ninja.

The katana was mostly paired with the wakizashi or shōtō, a similarly made but smaller sword, both worn by the members of the warrior class. It could also be worn with the tantō, an even smaller similarly shaped blade. The two weapons together were called the daishō and represented the social power and personal honour of the samurai. Although the name katana is more common it only refers to the longer swords

The Wakizashi is a sword very similar to a katana. Basically, a Wakizashi is a shorter version of a traditional katana, and they usually have blades between 12 and 24 inches.