But then it becomes easy to make any comparison, right?
Following your idea:
‘Both are knights, use heavy swords, heavy armor…’
This means that the opposite you want is not just in the universe, but in everything.
So mages are the opposite of warriors, lol.
That’s not how it works… the image from the book you showed, works in this way: it contains the ORIGINS of each cosmic force, but just because one cosmic force is close to another doesn’t mean they have the same origin or are almost equal.
For example: when Alleria got close to Sylvanas, the VOID entity inside her whispered that the enemy was in front of her, the TRUE enemy.
So, could we say that the direct enemy of the cosmic force ‘death’ is the ‘void’? It depends…
What we can logically say is that death is one of the forces that can have some enemies, and its DIRECT counterpart is what counters it and is countered back - that’s why many think that LIGHT is its counterpart, or in this case, life, or everything that is pro-life.
Bcause light counters death, like, priest have a spell that just lock, LOCK, undead enemies - only undead enemies - not humans, not ferals, not dragon-kind, just undeads…why ? because holy power counters death magic and vice versa.