Cohesion in linguistics is when we use different words or phrases in our sentences that are related to each other and help to make our writing or speaking more clear and organized. It's like when we connect the dots in a picture and make a complete picture. For example, let's say we are talking about going to the store. We can use words like "groceries," "shopping," and "cart" to connect our ideas and show that we are talking about the same thing. This helps the listener or reader understand our message better. Just like how we put together a puzzle, cohesion helps us put together our words and ideas to make a complete picture.