prairie dock vs subshrub

prairie dock and subshrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
prairie dock	Yes	No	No	No
subshrub	Yes	No	No	No

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

prairie dock: stout perennial herb of the eastern United States with whitish flowers; leaves traditionally used by Catawba Indians to treat burns
subshrub: low-growing woody shrub or perennial with woody base

Other hypernyms of prairie dock include suffrutex.

prairie dock (noun)	subshrub (noun)
stout perennial herb of the eastern United States with whitish flowers; leaves traditionally used by Catawba Indians to treat burns	low-growing woody shrub or perennial with woody base