"The Scarlet Ibis" by James Hurst and "The Cask of Amontillado" by Edgar Allen Poe are both about conflicts between other characters; however, one story has a tone of anger and meanness, while the other has a tone of sadness and sorrow.
First and foremost, both stories are alike because one of the characters in both stories kills another character. In "The Cask of Amontillado," the killing that takes place is intentional. Montresor kills Fortunato because he seeks revenge against him. The reason Montresor seeks retaliation against Fortunato is because Fortunato commits an intolerable attack, which is unstated. Montresor mortars Fortunato in an underground cellar because of the attack that Fortunato commits against Montresor. Once they get in the cellar, Montresor chains Fortunato up without any food or water. He then begins to mortar Fortunato in, leaving him to die. In "The Scarlet Ibis," the narrator, which is Doodle's brother, unintentionally kills his brother. In the last part of the short story, there is a lightning storm and the narrator leaves Doodle behind. Knowing that his brother cannot stay up to pace with him he begins to run as fast as he can. When the narrator cannot hear his brother anymore, he retraces his steps and finds Doodle with his head buried in his arms with drawn-up knees. He discovers that Doodle is dead. Doodle is bleeding from the mouth, and his neck and the front of his shirt are stained red. He causes the death by trying to be mean in the first place. Even though Doodle is not normal, the narrator is trying to force Doodle to be a normal human being like everyone else. One reason he wants him to be normal is because when they go out in public Doodle embarrasses his brother. He does not do it on purpose though. There is a similarity in these stories because they both include one character killing another character.
Moreover, both stories are different because they have different tones.