diapensia vs suffrutex

diapensia and suffrutex both are nouns.

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

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

Other hypernyms of diapensia include subshrub.

diapensia (noun)	suffrutex (noun)
any boreal low-growing evergreen plant of the genus Diapensia	low-growing woody shrub or perennial with woody base