The samurai sword is commonly known as a katana. The katana is a traditional Japanese sword that is characterized by its curved, single-edged blade, circular or squared guard (tsuba), and long grip that can accommodate two hands. It is one of the most iconic and recognizable weapons associated with the samurai warriors of feudal Japan.

The katana was not the only type of sword used by samurai, but it is the most famous and widely known. It was the primary weapon of the samurai class during the feudal era and was renowned for its cutting ability, balance, and craftsmanship.

The process of crafting a katana involved skilled swordsmiths who meticulously forged and shaped the blade using traditional techniques. The katana's design and construction allowed for effective cutting, slashing, and thrusting motions, making it a versatile weapon on the battlefield.

Apart from the katana, other types of Japanese swords used by samurai include the wakizashi (a shorter companion sword) and the tanto (a dagger or knife). These swords were often worn together as part of a samurai's attire and represented their social status and warrior identity.