S.U.V. vs SUV

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

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

As nouns, S.U.V. and SUV are synonyms defined as:

S.U.V. and SUV: a high-performance four-wheel drive car built on a truck chassis

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

S.U.V. (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