Final answer:
Halloween is a secular holiday associated with costumes and trick-or-treating, while All Souls' Day and All Saints' Day are religious observances in the Catholic Church dedicated to remembering the souls of the departed and honoring the saints.
Step-by-step explanation:
Halloween is a secular holiday celebrated on October 31 in many countries around the world, including the United States. It originated from the ancient Celtic festival of Samhain, which marked the end of the harvest season and the beginning of winter. Halloween is associated with customs like dressing up in costumes, trick-or-treating, and carving pumpkins.
All Souls' Day or All Saints' Day, on the other hand, are observed in the Catholic Church on November 2 and November 1, respectively. These days are dedicated to remembering and praying for the souls of all the faithful departed, especially those who have not yet reached heaven. It is a time to honor the saints and remember deceased loved ones through prayer, visits to cemeteries, and lighting candles.
The key difference between Halloween and All Souls' Day/All Saints' Day is that Halloween is a secular holiday with its roots in ancient Celtic traditions, while All Souls' Day and All Saints' Day are religious observances in the Catholic Church.