railroad terminal vs railroad station

railroad terminal and railroad station both are nouns.

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

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

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

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

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