genus Phytelephas vs Arecaceae

genus Phytelephas and Arecaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Phytelephas	Yes	No	No	No
Arecaceae	Yes	No	No	No

genus Phytelephas (noun)	Arecaceae (noun)
small genus of South American feather palms	chiefly tropical trees and shrubs and vines usually having a tall columnar trunk bearing a crown of very large leaves; coextensive with the order Palmales