The Underground Railroad was a secret network of people and safe houses that helped enslaved African Americans escape to freedom in the 19th century. The term "Underground Railroad" was coined because the network operated in secret and used railroad terminology to describe its system. However, there are other terms used to refer to this network, including the "Freedom Trail," "the Liberty Line," "the Gospel Train," and "the Pathway to Freedom." These synonyms highlight the significance of the Underground Railroad in American history and the courage of those who risked their lives to help others escape the horrors of slavery.