spaceship vs space vehicle

spaceship and space vehicle both are nouns.

Word	Noun	Adjective	Verb	Adverb
spaceship	Yes	No	No	No
space vehicle	Yes	No	No	No

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

spaceship: a spacecraft designed to carry a crew into interstellar space (especially in science fiction)
space vehicle: a craft capable of traveling in outer space; technically, a satellite around the sun

Other hypernyms of spaceship include ballistic capsule, spacecraft.

spaceship (noun)	space vehicle (noun)
a spacecraft designed to carry a crew into interstellar space (especially in science fiction)	a craft capable of traveling in outer space; technically, a satellite around the sun