Roystonea oleracea vs cabbage palm

Roystonea oleracea and cabbage palm both are nouns.

Word	Noun	Adjective	Verb	Adverb
Roystonea oleracea	Yes	No	No	No
cabbage palm	Yes	No	No	No

As nouns, Roystonea oleracea and cabbage palm are synonyms defined as:

Roystonea oleracea and cabbage palm: West Indian palm with leaf buds that are edible when young

Roystonea oleracea (noun)	cabbage palm (noun)
West Indian palm with leaf buds that are edible when young	West Indian palm with leaf buds that are edible when young
	Brazilian palm of genus Euterpe whose leaf buds are eaten like cabbage when young
	Australian palm with leaf buds that are edible when young
	low-growing fan-leaved palm of coastal southern United States having edible leaf buds