Oh, they're like tiny little containers for your regex patterns. You can think of them like little boxes or groups that help you match more than one thing at once. It's like a party for your regular expressions, where everyone gets their own little dance floor and can do their own thing.
There are a few types of regex groups, but don't worry, I won't make you read too much.
Capturing groups are like the life of the party. They're where the action is.
With capturing groups, you can use thechartInstance of their captured value later in your regex.
They're like little containers that hold onto their matched values, so you can use them later in your code.
Non-capturing groups are like the wallflowers of the party. They're there, but nobody's really interested in them.
They're like a big empty space that just kinda sits there.
But, hey, someone's gotta keep the party interesting, right?