There are various synonyms for the term "switch engine" used in the railway industry. Some of the common alternatives include "shunting locomotive," "yard goat," or simply "switcher." A switch engine is primarily used to move trains between different tracks in a railroad yard or a train station. Switch engines usually have a small size, allowing them to easily navigate around the tight turns and narrow tracks in the yard. Often, these engines have low horsepower compared to other locomotives, which makes them ideal for operating at slow speeds. Regardless of the term used, the primary function of these engines always remains the same, that is shuffling cars from one place to another.