Weapons are every damage-dealing item across the four classes — melee, ranged, magic and summon. Pick a class and progression stage in the class guides for the best loadout, or use the DPS calculator to compare any two.
Four: melee (swords, yoyos, flails), ranged (guns, bows, launchers — needs ammo), magic (staves and spellbooks — needs mana), and summon (minions and whips). Each has its own armor and accessories.
It depends on class and stage. Endgame picks include the Zenith (melee), Terrarian (yoyo), Last Prism (magic) and the Terraprisma (summon). Use the DPS calculator and class guides to compare.