A steam locomotive is a type of railway locomotive that uses steam engines to power its movement. It has been an iconic symbol of transportation since the 19th century and has become a popular subject in literature, film, and art. There are several synonyms for the steam locomotive, including steam engine, iron horse, locomotive, train, rail car, and railway engine. Each of these synonyms denotes the unique features of the steam locomotive, such as its steam-powered engine, its iron construction, its locomotion capabilities, and its use on railways. Regardless of the synonym used, the steam locomotive remains a fascinating and important part of transportation history.