Weapons are your primary source of offense. Different weapon types are restricted to specific jobs and have unique properties. Swords are common and versatile, used by Knights and Squires. Katanas are exclusive to Samurai and often have elemental properties. Spears offer increased range and are used by Dragoons. Bows and Crossbows provide ranged physical attacks for Archers.
Other weapon types include Knives (Thieves), Axes (strong but inaccurate), Flails (variable damage), Staves (Mages), and Books (Orators). Pay attention to a weapon's Attack Power, Evade %, and any elemental properties or status effects it might inflict. Always equip the best weapon available for your current job and strategy.