wild sarsaparilla vs subshrub

wild sarsaparilla and subshrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
wild sarsaparilla	Yes	No	No	No
subshrub	Yes	No	No	No

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

wild sarsaparilla: common perennial herb having aromatic roots used as a substitute for sarsaparilla; central and eastern North America
subshrub: low-growing woody shrub or perennial with woody base

Other hypernyms of wild sarsaparilla include suffrutex.

wild sarsaparilla (noun)	subshrub (noun)
common perennial herb having aromatic roots used as a substitute for sarsaparilla; central and eastern North America	low-growing woody shrub or perennial with woody base