Okay kiddo, have you ever been on a bus or a train that stops at every single stop, no matter what? It can feel like it takes forever, right? But a limited stop bus or train is like a special one that only stops at certain stops, so it gets to its destination faster.
It's kind of like when you're playing a game and you have to make it from one spot to another, but you can only step on a certain number of squares. If you step on too many, you'll lose. The limited stop bus or train is playing that same game - it can only stop at a certain number of spots or it'll be too slow to get where it needs to go.
So, if you're on a limited stop bus or train, it'll go faster and you'll get to where you're going quicker. But if you're on a regular one that stops at every single stop, it might take a little longer.