Ononis spinosa vs suffrutex

Ononis spinosa and suffrutex both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ononis spinosa	Yes	No	No	No
suffrutex	Yes	No	No	No

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

Ononis spinosa: Eurasian plant having loose racemes of pink or purple flowers and spiny stems and tough roots
suffrutex: low-growing woody shrub or perennial with woody base

Other hypernyms of Ononis spinosa include subshrub.

Ononis spinosa (noun)	suffrutex (noun)
Eurasian plant having loose racemes of pink or purple flowers and spiny stems and tough roots	low-growing woody shrub or perennial with woody base