fan palm vs carnauba

fan palm and carnauba both are nouns.

Word	Noun	Adjective	Verb	Adverb
fan palm	Yes	No	No	No
carnauba	Yes	No	No	No

As nouns, carnauba is a hyponym of fan palm; that is, carnauba is a word with a more specific, narrower meaning than fan palm:

fan palm: palm having palmate or fan-shaped leaves
carnauba: Brazilian fan palm having an edible root; source of a useful leaf fiber and a brittle yellowish wax

fan palm (noun)	carnauba (noun)
palm having palmate or fan-shaped leaves	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