What aspects of both araby and a and p is ironic?

In "Araby," the narrator's idealization of Mangan's sister contrasts with the disappointing reality of the bazaar, highlighting the ironic gap between his romantic dreams and the bleakness of his surroundings. In "A&P," Sammy quits his job to defend the girls' honor, expecting them to appreciate his gesture, but they leave without acknowledging him, showing the ironic discrepancy between his heroic expectations and the indifferent reality of the situation.