way station vs stopover

way station and stopover both are nouns.

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

As nouns, way station and stopover are synonyms defined as:

way station (noun)	stopover (noun)
a small railway station between the principal stations or a station where the train stops only on a signal	a brief stay in the course of a journey
a stopping place on a journey	a stopping place on a journey