A sword spear, also known as a "naginata," is a traditional Japanese polearm weapon that combines elements of both a sword and a spear. The term "naginata" translates to "long sword" or "reaping sword" in Japanese.

The naginata consists of a long pole (usually around 6 to 9 feet) with a curved blade attached to the end. The blade resembles a single-edged sword, typically with a slight curve and a length of around 1 to 2 feet. The overall design allows for both slashing and thrusting attacks.

Historically, naginatas were primarily used by samurai women, as they were effective weapons for both mounted and foot combat. The length of the polearm provided reach advantage while the curved blade allowed for sweeping strikes and powerful thrusts.

Naginatas played a significant role in battles, offering versatility against opponents armed with swords or spears. They were particularly effective in repelling cavalry charges, as the extended reach allowed the wielder to strike at horse-mounted adversaries from a safer distance.

In modern times, naginatas are still practiced and used in traditional martial arts, such as naginatajutsu and women's self-defense classes. However, it's important to note that the naginata is primarily a historical weapon and is less commonly employed in contemporary combat scenarios.