A trainspotter is someone who enjoys watching and collecting information about trains and railroad systems. While a trainspotter may be seen by some as overly obsessive or nerdy, there are many synonyms that can be used to describe this unique hobbyist. For example, a train enthusiast, railfan or railroad buff can all be used to describe someone who is fascinated by trains and their inner workings. Additionally, a railway aficionado, locomotive lover or track devotee can all be used as synonyms for a trainspotter, highlighting the diverse range of people who are interested in this pastime.