darling pea vs suffrutex

darling pea and suffrutex both are nouns.

Word	Noun	Adjective	Verb	Adverb
darling pea	Yes	No	No	No
suffrutex	Yes	No	No	No

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

darling pea: either of two Australian plants of the genus Swainsona that are poisonous to sheep
suffrutex: low-growing woody shrub or perennial with woody base

Other hypernyms of darling pea include subshrub.

darling pea (noun)	suffrutex (noun)
either of two Australian plants of the genus Swainsona that are poisonous to sheep	low-growing woody shrub or perennial with woody base