Subtitles are words that appear on the screen while we watch movies or TV shows. They help us understand what people are saying, especially if they speak a different language or have an accent that's hard to understand.
Think of it like a book that's on the screen. When people talk, the words show up on the bottom of the screen just like the book's words are on a page. That way, we can read what they're saying and follow the story without missing anything important.
Subtitles can be really helpful for people who are deaf or hard of hearing, too. They can read what's being said instead of having to rely on just their hearing.
If you ever see a movie or show with subtitles, it's usually because the people who made it want to make sure everyone can enjoy and understand it, no matter what language they speak or what their hearing is like.