Imagery - Paragraph 6 line 7, This contributes to the story by giving the reader an idea of how the inside of the house looked like
While the carvings of the ceilings, the somber tapestries of the walls, the ebon blackness of the floors, and the phantasmagoric armorial trophies which rattled as I strode.
Foreshadow - Paragraph 4, line 14, The small moment when Poe shakes off the vicious atmosphere foreshadows the horrors the House of Usher is going to show
An atmosphere which had no affinity with the air of heaven, but which had reeked up from the decayed trees, and the gray wall, and the silent tarn—a pestilent and mystic vapor, dull, sluggish, faintly discernible, and leaden-hued.Shaking off from my spirit what must have been a dream,
Personification - paragraph 8 line 16, In this scene Poe describes Roderick after not seeing him in a long time. Poe describes his chin as strong he does this to emphasize how Roderick looks like now.
A finely molded chin, speaking, in its want of prominence, of a want of moral energy.
Metaphor - Paragraph 5 line 10, When Poe sees the exterior of the house he relates it to old woodwork that looks like it has rotted. It contributes to the story by giving us an idea of what the exterior looks like.
In this there was much that reminded me of the specious totality of old woodwork which has rotted for long years in some neglected vault.
Hyperbole - Paragraph 1 line 16, Poe describes the depression he gets when he sees the house so bad that he can't compare it to any other emotion which is an over exaggeration.
With an utter depression of soul, which I can compare to no earthly sensation more properly than to the after-dream of the reveler upon opium.
Simile - Paragraph 48 line 12, While the House of Usher was falling Poe compares a distinct shouting noise to the voice of a thousand waters. He says this to emphasize how loud that noise was and so we can imagine it ourselves.
There was a long tumultuous shouting sound like the voice of a thousand waters.