S.U.V. vs motorcar

S.U.V. and motorcar both are nouns.

Word	Noun	Adjective	Verb	Adverb
S.U.V.	Yes	No	No	No
motorcar	Yes	No	No	No

As nouns, motorcar is a hypernym of S.U.V.; that is, motorcar is a word with a broader meaning than S.U.V.:

S.U.V.: a high-performance four-wheel drive car built on a truck chassis
motorcar: a motor vehicle with four wheels; usually propelled by an internal combustion engine

Other hypernyms of S.U.V. include auto, automobile, car, machine.

S.U.V. (noun)	motorcar (noun)
a high-performance four-wheel drive car built on a truck chassis	a motor vehicle with four wheels; usually propelled by an internal combustion engine