Stanleya pinnata vs subshrub

Stanleya pinnata and subshrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Stanleya pinnata	Yes	No	No	No
subshrub	Yes	No	No	No

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

Stanleya pinnata: perennial of southwestern United States having leathery blue-green pinnatifid leaves and thick plumelike spikes of yellow flowers; sometimes placed in genus Cleome
subshrub: low-growing woody shrub or perennial with woody base

Other hypernyms of Stanleya pinnata include suffrutex.

Stanleya pinnata (noun)	subshrub (noun)
perennial of southwestern United States having leathery blue-green pinnatifid leaves and thick plumelike spikes of yellow flowers; sometimes placed in genus Cleome	low-growing woody shrub or perennial with woody base