railroad station vs railway station

railroad station and railway station both are nouns.

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

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

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

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

railroad station (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