Harmony vs Lull vs Frenzy radius?

[ChaosSlayer]

Looking at variosu "lull" spells and one thing i don't understand.

Why are there MULTYPLE lull effects?
For exmaple one lull contains effects just "lull"
Another contains lull and frenzy reduction, another both + harmony.
Arent they ALL supose to just..you know.. LULL???

From what I understand "lull" simply reduction of mob agro awarness radius.
It comes as single or aoe version.... Why 3 diffirent types?

[Theeper]

There are different effects on the Paci/Lull type spells. Each spell has one or more of these components.

Pacify - mob won't aggro you at all, no matter how close you get to it.
Reaction - reduces the assist range
Frenzy - reduces the aggro range

.. or something like that.