This category pertains to the "Monsters" launched by certain mobs (usually Mages) at the player.
“Fungi Spores are a projectile fired from the Giant Fungi Bulb, and are its main attack aside...Fungi Spore
“Spores are hostile projectiles spawned by Plantera. They can be avoided by being hit, or shot...Spore
“Burning Spheres are magical projectiles launched at the player by Fire Imps. They have 1 HP and...Burning Sphere