The "desire for revenge" and the "horrors of humanity" are themes that interact with each other as they show that the human being's capacity to judge and reject is what drives the wave of revenge that the creature establishes.
We can arrive at this answer because:
In this case, these two themes can be considered the main elements, which guide the entire plot, in addition to interacting with each other.
This question is about "Frankenstein" and you can have more information about it at the link:
https://brainly.com/question/2685226