Halloween has changed over time in many ways, including the costumes, decorations, and activities associated with the holiday. In the past, Halloween was a more religious and superstitious holiday, with people dressing up as saints and angels and engaging in rituals to ward off evil spirits. Today, Halloween is more of a secular holiday, with costumes and decorations that are more whimsical and fun. Activities such as trick-or-treating, costume parties, and haunted houses have become popular traditions.