space station vs orbiter

space station and orbiter both are nouns.

Word	Noun	Adjective	Verb	Adverb
space station	Yes	No	No	No
orbiter	Yes	No	No	No

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

space station: a manned artificial satellite in a fixed orbit designed for scientific research
orbiter: man-made equipment that orbits around the earth or the moon

Other hypernyms of space station include artificial satellite, satellite.

space station (noun)	orbiter (noun)
a manned artificial satellite in a fixed orbit designed for scientific research	man-made equipment that orbits around the earth or the moon