Line
Line noun - A series of persons or things arranged one behind another.
Underground railway and line are semantically related In some cases you can use "Underground railway" instead a noun "Line".
Underground railway
Underground railway noun - Secret aid to escaping slaves that was provided by abolitionists in the years before the American Civil War.
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Synonyms for Underground railway
Line and underground railway are semantically related in train line topic. You can use "Line" instead a noun phrase "Underground railway".
Both terms in one sentence
- At the same time, a company that has ties to today's Tokyu Electric Railway (the Tokyo Rapid Railway) built a subway line between Shibuya and Toranomon, which opened in 1938, and was extended to 1938 to connect to the Tokyo Underground Railway in Shibuya.
Source: Useful Notes / Tokyo Subways
Cite this Source
Underground railway and Line. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/line/underground_railway
Line & Underground railway. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/line/underground_railway>.
Underground railway or Line. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/line/underground_railway.
Google Ngram Viewer shows how "line" and "underground railway" have occurred on timeline