Answer:
Horror, entombed.
Step-by-step explanation:
Edgar Allen Poe's gothic novel "The Fall of the House of Usher" revolves around the story of an unnamed narrator's visit to his friend's house. The events of the house of Usher will bring the end of the house as well as the Usher family.
The gothic genre of any writing deals with themes of uncertainty, horror, suspense, supernatural elements, etc. And among the words given in the question, the two words that contribute to the Gothic mood and tone of the story are horror and entombed. They helped add to the mystery and suspense of the story.
Thus, the correct answers are horror and entombed.