"Catch up" is a phrasal verb that can have several meanings depending on the context:
1. **To reach someone or something that is ahead**: For example, if you are running and someone else is ahead of you, you might try to catch up to them by running faster.
2. **To update or exchange news**: When people say they want to "catch up," they often mean they want to talk and share what has happened in their lives since they last met.
3. **To make up