Homographs are words that are spelled the same but have different meanings. Imagine you have two toys that look exactly the same, but one is a car and the other is a plane. That's like homographs! They look the same (same letters), but they mean different things.
For example, the word "bow" can mean a type of knot tied with a ribbon or a gesture of respect where you bend your head. The word "bat" can mean an animal that flies and sleeps upside down or a tool used to hit a ball in a game.
Just like it can be confusing to tell the toy car from the toy plane, it can be tricky to use homographs correctly in sentences. That's why it's important to pay attention to the context or the other words around the homograph to understand the correct meaning.