The distinction between a dagger and a sword lies primarily in their size, design, and intended use. While both are bladed weapons, there are several key factors that differentiate a dagger from a sword:

1. Size and Length: Generally, a dagger is a shorter weapon compared to a sword. Daggers typically have a blade length of less than 12 inches (30 cm), whereas swords typically have longer blades, ranging from 18 inches (45 cm) to several feet in length.
2. Blade Design: Daggers typically have a single-edged or double-edged blade, which may be straight or slightly curved. They are primarily designed for thrusting and stabbing attacks, although some daggers may also have limited cutting capabilities. Swords, on the other hand, often have longer, curved blades that are optimized for slashing, cutting, and sometimes thrusting.
3. Grip and Handling: Daggers typically have a short handle or grip designed to be held with one hand, allowing for precise control and close-quarter combat. Swords, especially those designed for two-handed use, have longer handles that accommodate a two-handed grip, providing leverage and power for sweeping movements and parries.
4. Intended Use: Daggers are often regarded as secondary or backup weapons, worn alongside a primary weapon such as a sword or as concealed weapons for self-defense. They are commonly used in close-quarters combat, for utility purposes, or as stabbing weapons. Swords, on the other hand, are primary weapons and were historically employed by warriors, knights, or soldiers on the battlefield. They are versatile weapons designed for both offensive and defensive maneuvers.

While there can be variations and overlap between dagger and sword designs, these factors generally distinguish between the two types of weapons. Ultimately, the classification of a bladed weapon as a dagger or a sword depends on its size, blade design, and intended use.