devil's weed vs suffrutex

devil's weed and suffrutex both are nouns.

Word	Noun	Adjective	Verb	Adverb
devil's weed	Yes	No	No	No
suffrutex	Yes	No	No	No

As nouns, suffrutex is a hypernym of devil's weed; that is, suffrutex is a word with a broader meaning than devil's weed:

devil's weed: tropical annual procumbent poisonous subshrub having fruit that splits into five spiny nutlets; serious pasture weed
suffrutex: low-growing woody shrub or perennial with woody base

Other hypernyms of devil's weed include subshrub.

devil's weed (noun)	suffrutex (noun)
tropical annual procumbent poisonous subshrub having fruit that splits into five spiny nutlets; serious pasture weed	low-growing woody shrub or perennial with woody base