carnauba vs carnauba wax

carnauba and carnauba wax both are nouns.

Word	Noun	Adjective	Verb	Adverb
carnauba	Yes	No	No	No
carnauba wax	Yes	No	No	No

As nouns, carnauba and carnauba wax are synonyms defined as:

carnauba and carnauba wax: hard yellowish to brownish wax from leaves of the carnauba palm used especially in floor waxes and polishes

carnauba (noun)	carnauba wax (noun)
Brazilian fan palm having an edible root; source of a useful leaf fiber and a brittle yellowish wax	hard yellowish to brownish wax from leaves of the carnauba palm used especially in floor waxes and polishes
hard yellowish to brownish wax from leaves of the carnauba palm used especially in floor waxes and polishes