However, it can be used figuratively to emphasize the urgency or importance of something.
For example:
* "I need to catch the train home; I have a meeting in the morning." (The speaker emphasizes the need to leave immediately to make it home in time for the meeting)
* "We need to catch the train to success, or we'll be left behind." (The speaker emphasizes the importance of striving for success and not falling behind others)
Therefore, "catch a train" can be used to convey the need to act quickly and not miss an opportunity.