[Whatever character, being or concept that’s being discussed] has a great amount of power, but it is not within their temperament to use it.
The literal definition of reprieve is to cancel or postpone. If prisoners from a concentration camp are hoping for a reprieve from death, that either means that they hope to escape or be sent to labor opposed to a death sentence (ie gas chambers)
Percy Jackson and Harry Potter share the theme of friendship and fantasy.
In Percy Jackson, Percy is always moving from school to school, when he meets his friend Grover, they travel to camp half-blood. Percy meets Annabeth and they soon become best friends.
In Harry Potter, Harry is friendless and lonely like Percy, he goes to Hogwarts and meets Ron, quick to be 'best mates.'