eriogonum vs suffrutex

eriogonum and suffrutex both are nouns.

Word	Noun	Adjective	Verb	Adverb
eriogonum	Yes	No	No	No
suffrutex	Yes	No	No	No

As nouns, suffrutex is a hypernym of eriogonum; that is, suffrutex is a word with a broader meaning than eriogonum:

Other hypernyms of eriogonum include subshrub.

eriogonum (noun)	suffrutex (noun)
any plant of the genus Eriogonum with small clustered flowers	low-growing woody shrub or perennial with woody base