missionary station vs mission

missionary station and mission both are nouns.

Word	Noun	Adjective	Verb	Adverb
missionary station	Yes	No	No	No
mission	Yes	No	No	No

As nouns, missionary station and mission are synonyms defined as:

missionary station and mission: an organization of missionaries in a foreign land sent to carry on religious work

Other synonyms of missionary station include foreign mission, missionary post.

missionary station (noun)	mission (noun)
an organization of missionaries in a foreign land sent to carry on religious work	a special assignment that is given to a person or group
	an operation that is assigned by a higher headquarters
	the organized work of a religious missionary
	a group of representatives or delegates
	an organization of missionaries in a foreign land sent to carry on religious work