The part where Zaroff tried to include Rainsford in his sick hunting game would be the best portray Zaroff as Rainsford's foil i think.
Beside that, they both actually are very similar with one another
Answer:
it describes this thoughts when he was captured and he was a traveller
Explanation:
he left his wife and went to travel around the world
The only one I think would work would be accelerate
