station vs outstation

station and outstation both are nouns.

Word	Noun	Adjective	Verb	Adverb
station	Yes	No	Yes	No
outstation	Yes	No	No	No

As nouns, outstation is a hyponym of station; that is, outstation is a word with a more specific, narrower meaning than station:

station: the position where someone (as a guard or sentry) stands or is assigned to stand
outstation: a station in a remote or sparsely populated location

Other hyponyms of station include bridgehead, lookout, observation post, outpost.

station (noun)	outstation (noun)
a facility equipped with special equipment and personnel for a particular purpose	a station in a remote or sparsely populated location
the frequency assigned to a broadcasting station
the position where someone (as a guard or sentry) stands or is assigned to stand
(nautical) the location to which a ship or fleet is assigned for duty
proper or designated social situation

station (verb)	outstation (verb)
assign to a station