Sapindus drumondii vs soapberry

Sapindus drumondii and soapberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sapindus drumondii	Yes	No	No	No
soapberry	Yes	No	No	No

As nouns, soapberry is a hypernym of Sapindus drumondii; that is, soapberry is a word with a broader meaning than Sapindus drumondii:

Sapindus drumondii: deciduous tree of southwestern United States having pulpy fruit containing saponin
soapberry: a tree of the genus Sapindus whose fruit is rich in saponin

Other hypernyms of Sapindus drumondii include soapberry tree.

Sapindus drumondii (noun)	soapberry (noun)
deciduous tree of southwestern United States having pulpy fruit containing saponin	a tree of the genus Sapindus whose fruit is rich in saponin