spacecraft vs space vehicle

spacecraft and space vehicle both are nouns.

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

As nouns, spacecraft and space vehicle are synonyms defined as:

spacecraft and space vehicle: a craft capable of traveling in outer space; technically, a satellite around the sun

Other synonyms of spacecraft include ballistic capsule.

spacecraft (noun)	space vehicle (noun)
a craft capable of traveling in outer space; technically, a satellite around the sun	a craft capable of traveling in outer space; technically, a satellite around the sun