space shuttle vs space vehicle

space shuttle and space vehicle both are nouns.

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

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

space shuttle: a reusable spacecraft with wings for a controlled descent through the Earth's atmosphere
space vehicle: a craft capable of traveling in outer space; technically, a satellite around the sun

Other hypernyms of space shuttle include ballistic capsule, spacecraft.

space shuttle (noun)	space vehicle (noun)
a reusable spacecraft with wings for a controlled descent through the Earth's atmosphere	a craft capable of traveling in outer space; technically, a satellite around the sun