Rapiers are a type of sword that were popular during the 16th and 17th centuries. They are characterized by their long, slender blades and sharp points. Rapiers are often used in fencing and dueling, and are sometimes referred to as 'duelling swords'. The term rapier is also used to refer to other types of swords, such as epees and foils. Epees are heavier than rapiers and have a triangular cross-section, while foils are lighter and have a rectangular cross-section. All three types of swords are used in fencing and dueling, and all three are considered rapiers.