Prunus cuneata vs shrub

Prunus cuneata and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Prunus cuneata	Yes	No	No	No
shrub	Yes	No	No	No

As nouns, shrub is a hypernym of Prunus cuneata; that is, shrub is a word with a broader meaning than Prunus cuneata:

Prunus cuneata: small straggling American cherry growing on sandy soil and having minute scarcely edible purplish-black fruit
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Prunus cuneata include bush.

Prunus cuneata (noun)	shrub (noun)
small straggling American cherry growing on sandy soil and having minute scarcely edible purplish-black fruit	a low woody perennial plant usually having several major stems