Historically katana were one of the traditionally made Japanese swords that were used in feudal Japan, also commonly referred to as a "samurai sword".Modern versions of the katana are sometimes made using non-traditional materials and methods. The katana is characterized by its distinctive appearance: a curved, slender, single-edged blade with a circular or squared guard and long grip to accommodate two hands. It has historically been associated with the samurai of feudal Japan.

[wikipedia]