Both Stories focus on curiosity and how dangerous it could be.
both have a serious concequence after doing something because of their curioisity
In both "Pandora's box" and "The Monkey's Paw" curiosity ruled. But in "Pandora's box" Pandora hid the box under her bed to try to stop her curiousity. On the other hand, in "The Monkey's Paw". the characters just left the paw out in the open.
In Pandoras Box, The story ended in a somewhat positive note, while The Monkeys Paw ended in a ominous and scary note.