The energy of anger (amplified frustration) can be managed and channeled into productive behavior.
I would place them as different levels of intensity of a similar emotion.
Kind of like desire and greed.
But I always reserve the right to be wrong!
Sometimes the pain of being a victim is externalized as anger as a person takes their power over their will back.
This is good as we must own our emotions to change them. As a victim, someone else is holding our power and we have no authority to change.