The term 'cavalry sword' refers to a type of sword used by cavalry soldiers in the past. The two most common types of cavalry swords are sabres and sabers. A SABRE is a curved, single-edged sword with a thick back and a thin edge, while a SABER is a straight, single-edged sword with a thick back and a thin edge. Both types of swords were used by cavalry soldiers in the past, and both have five letters in their names.