"Halloween" is trending because it's an annual holiday celebrated widely on October 31st, and the current date is October 30th, meaning people are actively engaging with or preparing for the festivities.

This holiday sparks a lot of interest related to entertainment, as people search for costume ideas, haunted attractions, themed parties, and spooky movies to watch. Many also look for information on how to host their own celebrations, which involves planning fun activities for friends and family.

It also falls under hobbies and leisure because individuals enjoy creative pursuits like carving pumpkins into "jack-o'-lanterns," decorating their homes with spooky themes, and making elaborate costumes. Trick-or-treating, where children go door-to-door for candy, is another popular leisure activity that draws widespread participation.