railroad terminal vs railway station

railroad terminal and railway station both are nouns.

Word	Noun	Adjective	Verb	Adverb
railroad terminal	Yes	No	No	No
railway station	Yes	No	No	No

As nouns, railroad terminal and railway station are synonyms defined as:

railroad terminal and railway station: a terminal/node where trains load or unload passengers or goods

Other synonyms of railroad terminal include railroad station, train depot, train station.

railroad terminal (noun)	railway station (noun)
a terminal/node where trains load or unload passengers or goods	a terminal/node where trains load or unload passengers or goods