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
“The Heart Arrow is a type of ammo exclusive to the Mobile Version of Terraria during Valentine's...Heart Arrow
“Wooden Arrows are very basic ammo that can be used with any Bow. There is a chance to pick the...Wooden Arrow
“The Unholy Arrow is a powerful arrow but relatively cheap and easy to obtain, a tier after the...Unholy Arrow
“Spectral Arrows are a console- and mobile-exclusive type of ammo. When fired, they emit a...Spectral Arrow