Question about bow (skills)

is there a difference between rain of arrows and storm of arrows?
like size, speed, etc

well storm of arrow is much bigger, has more arrows to potentially deal damage with (but spread over a larger area) but has a much longer cooldown

Okay, so how long is its cooldown? (Compared to rain of arrows)

we’ve got a curious one

Think of storm of arrows as a “heavier rain of arrows”. It can deal more damage, but it deploys slower and has longer endlag.