These items are designed to be used as ammo for bows.
“Arrows can be crafted from various materials found around Terraria and are used as ammunition...Arrow
“Wooden Arrows are very basic ammo that can be used with any Bow. There is a chance to pick the...Wooden Arrow
“The Heart Arrow is a type of ammo exclusive to the Mobile Version of Terraria during Valentine's...Heart Arrow
“The Unholy Arrow is a powerful arrow but relatively cheap and easy to obtain, a tier after the...Unholy Arrow