wild lupine vs suffrutex

wild lupine and suffrutex both are nouns.

Word	Noun	Adjective	Verb	Adverb
wild lupine	Yes	No	No	No
suffrutex	Yes	No	No	No

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

wild lupine: stout perennial of eastern and central North America having palmate leaves and showy racemose blue flowers
suffrutex: low-growing woody shrub or perennial with woody base

Other hypernyms of wild lupine include subshrub.

wild lupine (noun)	suffrutex (noun)
stout perennial of eastern and central North America having palmate leaves and showy racemose blue flowers	low-growing woody shrub or perennial with woody base