way station vs train station

way station and train station both are nouns.

Word	Noun	Adjective	Verb	Adverb
way station	Yes	No	No	No
train station	Yes	No	No	No

As nouns, train station is a hypernym of way station; that is, train station is a word with a broader meaning than way station:

way station: a small railway station between the principal stations or a station where the train stops only on a signal
train station: a terminal/node where trains load or unload passengers or goods

Other hypernyms of way station include railroad station, railroad terminal, railway station, train depot.

way station (noun)	train station (noun)
a small railway station between the principal stations or a station where the train stops only on a signal	a terminal/node where trains load or unload passengers or goods
a stopping place on a journey