Answer:
Tragedy and sorrow are examples.
Step-by-step explanation:
The two words comedy and laughter have a cause and effect relationship. Comedy is a type of genre, where it's main goal is to cause laughter. Laughter is an action that happens when someone thinks that something is comical, or funny.
A tragedy is a form of drama, or a genre in a play. It is an even that causes great sorrow. These two words are the opposite of comedy and laughter, but they have the same relationship.
Therefore, an example of a word pair with the same relationship as comedy and laughter is tragedy and sorrow.
Hope this helps! :D