Acalypha virginica vs shrub

Acalypha virginica and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Acalypha virginica	Yes	No	No	No
shrub	Yes	No	No	No

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

Other hypernyms of Acalypha virginica include bush.

Acalypha virginica (noun)	shrub (noun)
weedy herb of eastern North America	a low woody perennial plant usually having several major stems