Final answer:
After King Duncan's murder, the Porter scene in Macbeth's castle uses terms like "hell-gate," "equivocator," and "treasonous" to portray the castle as aligned with evil rather than heaven.
Step-by-step explanation:
In Macbeth Act 1, scene vi, Duncan and Banquo use words like "pleasant" and "heaven's breath" to describe the atmosphere of Macbeth's castle, indicating a sense of peace and heavenly purity. However, in the Porter scene, which takes place after the murder of King Duncan, the description of the castle shifts dramatically. The Porter implies he is the gatekeeper of hell, suggesting the castle has become associated with evil and suffering.
Three words from this scene that indicate this change are "hell-gate", "equivocator", and "treasonous". The porter refers to himself as the gatekeeper to hell, suggesting the entrance to Macbeth's castle is akin to the gates of hell. He discusses how an equivocator could deceive God and others, hinting at the deceptive nature present within the castle's walls. Finally, he mocks a treasonous English tailor, ironically alluding to Macbeth's own betrayal and the treason committed.