Presumably, that would depend on your conversatonal goal. We could refer to the Apollo lander as a spacecar[0] in a casual conversation but that could be tedious or misleading if a NASA representative were trying to pigdin with an ESA representative about the metal casing of a booster rocket ballooning past the expansion tolerance of the o-rings, using only the 3000 most common english words.

[0] https://xkcd.com/1133/