A sword's crossguard or cross-guard is a bar between the blade and hilt, essentially perpendicular to them, intended to protect the wielder's hand and fingers from opponents' weapons as well as from their own blade. Each of the individual bars on either side is known as a quillon or quillion.
A lightsaber is a fictional energy sword featured throughout Star Wars. A typical lightsaber is shown as a luminous laser sword about 3 feet (0.91 m) in length emitted from a metal hilt around 10.5 inches (27 cm) in length. Introduced in the original Star Wars film, it has since appeared in all 12 theatrical Star Wars films, with at least one lightsaber duel occurring in each installment of the "Skywalker saga". The lightsaber's distinct appearance was created using rotoscoping for the original films, and with digital effects for the prequel and sequel trilogies.
In the Star Wars universe, the lightsaber is the signature weapon of the light-side-wielding Jedi Order and the dark-side-wielding Sith Order. However, the lightsaber can also be wielded by non-Force-sensitive characters as an ordinary weapon or tool. The Jedi use lightsabers of various colors: most commonly blue and green, but also purple, white, black, and yellow. The Sith wield red-bladed sabers to distinguish themselves from the Jedi. The color of a lightsaber's blade is given by its kyber crystal, whose color is determined by a Jedi's connection to the Force. A lightsaber's hilt is built by its wielder and is, therefore, unique in design. There are several variations outside of the traditional single-bladed lightsaber, such as the double-bladed lightsaber (most famously wielded by Darth Maul), the curved-hilted lightsaber (wielded by Asajj Ventress and most famously by Count Dooku), crossguard lightsabers (used by Kylo Ren and occasionally by Jedi), and the Darksaber, forged by the Mandalorian Jedi Tarre Vizsla, but primarily wielded by the non-Force-sensitive Mandalorian rulers of Mandalore (including Pre Vizsla and Bo-Katan Kryze).
The hilt (rarely called a haft or shaft) is the handle of a knife, dagger, sword, or bayonet, consisting of a guard, grip, and pommel. The guard may contain a crossguard or quillons. A tassel or sword knot may be attached to the guard or pommel.
A Bowie knife (/ˈbuːi/ BOO-ee) is a pattern of fixed-blade fighting knives created by Rezin Bowie in the early 19th century for his brother James Bowie, who had become famous for his use of a large knife at a duel known as the Sandbar Fight.
Since its first incarnation, the Bowie knife has incorporated several recognizable and characteristic design features. However, in common usage, the term refers to any large sheath knife with a crossguard and a clip point, although there are exceptions and special cases. The knife pattern is still popular with collectors; in addition to various knife manufacturing companies, hundreds of custom knifemakers produce Bowie knives with different types of steel and variations in style.