Weapons are the primary method of increasing the Attack and sometimes Magic Attack of the equipping hero.
Weight
Each weapon has a weight value located beneath its gold value. In order for a hero to equip a weapon, they must have a Strength of at least the weapon's weight. This can be based on the hero's base strength, or modified through other cards such as food or spells.
Weapon Type
Weapons also have a type classification, such as Edged or Blunt. This trait is required for determining certain bonuses/penalties that the weapon may aquire, or for a weapons effectiveness (or ineffectiveness) against certain monsters.