astronomy satellite vs orbiter

astronomy satellite and orbiter both are nouns.

Word	Noun	Adjective	Verb	Adverb
astronomy satellite	Yes	No	No	No
orbiter	Yes	No	No	No

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

astronomy satellite: a satellite equipped with a telescope to observe infrared radiation
orbiter: man-made equipment that orbits around the earth or the moon

Other hypernyms of astronomy satellite include artificial satellite, satellite.

astronomy satellite (noun)	orbiter (noun)
a satellite equipped with a telescope to observe infrared radiation	man-made equipment that orbits around the earth or the moon