diapensia vs subshrub

diapensia and subshrub both are nouns.

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

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

Other hypernyms of diapensia include suffrutex.

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