railway station vs railroad station

railway station and railroad station both are nouns.

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

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

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

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

railway station (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