Bow:
How many arrows on screen at once
Cooldown between firing.
Candle:
How many fires on screen at once
Duration (like bow)
Speed (like bow)
Cooldown between firing
This would be good for creating basic "shooting" items that don't have the Space Invaders-esque Z1 restrictions. In Z3 quest template, the Bow would also have multiple arrows on screen at once but also cooldown.