Question

Macbeth and lady Macbeth both refer to to set a scary tone for the events in the play

Answer 1

It would be darkness. Hope this helps.

Answer 2

Since you provide no options, Shakespeare often used the word 'horror' to see a scary tone for the events in the play.

Sentence such as : 'he paralyzed with horror' and other type of sentence using this word set a scary tone for the play

hope this helps