Aralia elata vs shrub

Aralia elata and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Aralia elata	Yes	No	No	No
shrub	Yes	No	No	No

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

Aralia elata: deciduous clump-forming Asian shrub or small tree; adventive in the eastern United States
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Aralia elata include bush.

Aralia elata (noun)	shrub (noun)
deciduous clump-forming Asian shrub or small tree; adventive in the eastern United States	a low woody perennial plant usually having several major stems