sport utility vs SUV

sport utility and SUV both are nouns.

Word	Noun	Adjective	Verb	Adverb
sport utility	Yes	No	No	No
SUV	Yes	No	No	No

As nouns, sport utility and SUV are synonyms defined as:

sport utility and SUV: a high-performance four-wheel drive car built on a truck chassis

Other synonyms of sport utility include S.U.V., sport utility vehicle.

sport utility (noun)	SUV (noun)
a high-performance four-wheel drive car built on a truck chassis	a high-performance four-wheel drive car built on a truck chassis