twinflower vs suffrutex

twinflower and suffrutex both are nouns.

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

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

twinflower: creeping evergreen subshrub of the northern parts of Europe and Asia with delicate fragrant tubular bell-shaped usually pink flowers borne in pairs
suffrutex: low-growing woody shrub or perennial with woody base

Other hypernyms of twinflower include subshrub.

twinflower (noun)	suffrutex (noun)
creeping evergreen subshrub of the northern parts of Europe and Asia with delicate fragrant tubular bell-shaped usually pink flowers borne in pairs	low-growing woody shrub or perennial with woody base