The weapon you're referring to is a "pillow." While typically associated with sleeping, in certain contexts, it can be used as a pointed weapon in playful or humorous scenarios, such as pillow fights. However, in a traditional sense, it is not classified as a weapon. If you're looking for something more conventional, there may not be a direct match.
spear
stab
There are various pointed weapons. Spears, pikes, swords, knives are a few.
Lance
Throwing a pointed weapon.
stab
lance
Of course, the swordfish does. Hence the name SWORDfish.
Double click another weapon
The dagger is a short fixed blade knife with a pointed and edged blade which is used as a weapon for thrashing or cutting. German and fantasy daggers are famous.
WITHOUT putting your finger on the trigger, see that the muzzle of the weapon is pointed in a safe direction. THEN you may follow the steps to safely unload it- which will vary weapon to weapon.
The weapon has to be a double weapon. You can't just buy any weapon and have 2. When you buy it or get it when you equip it should automatically become 2 if it is a double weapon. So the person who answered this is partially correct. If you want to Dual Wield a weapon you have to look for the "Dual" before the name or simply look at the weapon icon. If it's a dagger shape, then that means it's a dual wield weapon.