Facebook Reels is a feature on Facebook that displays short videos automatically while you're browsing the site. When you hover your mouse over a video, a "Reel" button appears, allowing you to watch the video in full-screen mode.
2
Facebook Reels is a new feature on Facebook that lets you create short videos about your life. You can share these videos with your friends on Facebook, and others who you think might want to see them can "replay" them.
Answer from Canva:-
Facebook Reels is a new feature on Facebook that allows users to create and share short, entertaining videos. Reels videos can be up to 15 seconds long and can include music, text, and other creative elements. They are similar to Instagram’s popular ‘Stories’ feature and are designed to encourage creativity and engagement. With Reels, users can easily edit, add effects, and share their videos with their friends and followers.