Ragnarok Online/Weapons

Bow
Bows are Twohanded ranged weapons, whose attack is determined by Dexterity instead of Strength.

Gun
Guns can only be used by Gunslingers. Their attack is heavily influenced by Dexterity.

Katar
Katars are Twohanded weapons (and as such are not affected by the Skills Righthand Mastery and Lefthand Mastery), that can only be used by Assassins or above. They deal damage for both hands and double the wielder's critical rate. The damage dealt by the left hand is always lower than for the right hand. A player who has equipped a Katar and has a Critical rate of 10 has in fact a critical rate of 20% instead of normally 10%

Musical Instrument
Musical Instruments can only be used by Bards

Shuriken
Shuriken can only be used by Ninjas

Whip
Whips can only be used by Dancers