Arenga pinnata vs sago palm

Arenga pinnata and sago palm both are nouns.

Word	Noun	Adjective	Verb	Adverb
Arenga pinnata	Yes	No	No	No
sago palm	Yes	No	No	No

As nouns, sago palm is a hypernym of Arenga pinnata; that is, sago palm is a word with a broader meaning than Arenga pinnata:

Arenga pinnata: Malaysian feather palm with base densely clothed with fibers; yields a sweet sap used in wine and trunk pith yields sago
sago palm: any of various tropical Asian palm trees the trunks of which yield sago

Arenga pinnata (noun)	sago palm (noun)
Malaysian feather palm with base densely clothed with fibers; yields a sweet sap used in wine and trunk pith yields sago	any of various tropical Asian palm trees the trunks of which yield sago
	dwarf palmlike cycad of Japan that yields sago