Prunus spinosa vs shrub

Prunus spinosa and shrub both are nouns.

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

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

Other hypernyms of Prunus spinosa include bush.

Prunus spinosa (noun)	shrub (noun)
a thorny Eurasian bush with plumlike fruits	a low woody perennial plant usually having several major stems