Rhapis humilis vs lady palm

Rhapis humilis and lady palm both are nouns.

Word	Noun	Adjective	Verb	Adverb
Rhapis humilis	Yes	No	No	No
lady palm	Yes	No	No	No

As nouns, lady palm is a hypernym of Rhapis humilis; that is, lady palm is a word with a broader meaning than Rhapis humilis:

Rhapis humilis: Chinese lady palm with more slender stems and finer sheath fibers than Rhapis excelsa
lady palm: any of several small palms of the genus Rhapis; cultivated as houseplants

Rhapis humilis (noun)	lady palm (noun)
Chinese lady palm with more slender stems and finer sheath fibers than Rhapis excelsa	any of several small palms of the genus Rhapis; cultivated as houseplants