Western sand cherry vs subshrub

Western sand cherry and subshrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Western sand cherry	Yes	No	No	No
subshrub	Yes	No	No	No

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

Western sand cherry: dwarf ornamental shrub of western United States having large black to red and yellow sweet edible fruit
subshrub: low-growing woody shrub or perennial with woody base

Other hypernyms of Western sand cherry include suffrutex.

Western sand cherry (noun)	subshrub (noun)
dwarf ornamental shrub of western United States having large black to red and yellow sweet edible fruit	low-growing woody shrub or perennial with woody base