Epigaea repens vs shrub

Epigaea repens and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Epigaea repens	Yes	No	No	No
shrub	Yes	No	No	No

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

Epigaea repens: low-growing evergreen shrub of eastern North America with leathery leaves and clusters of fragrant pink or white flowers
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Epigaea repens include bush.

Epigaea repens (noun)	shrub (noun)
low-growing evergreen shrub of eastern North America with leathery leaves and clusters of fragrant pink or white flowers	a low woody perennial plant usually having several major stems