videri is right, if a spell has a stun or knockback component its usually referred to as a stun or knockback spell.
Tradiationa DD's shock of frost, fire spells, those dont have knockback components and are pure damage.
So if you want to know if a spell has a knockback or stun to it it will say it has a stun component like these
https://wiki.project1999.com/Chaotic_Feedback
https://wiki.project1999.com/Fury_of_Air