Ardisia paniculata vs shrub

Ardisia paniculata and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ardisia paniculata	Yes	No	No	No
shrub	Yes	No	No	No

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

Ardisia paniculata: tropical American shrub or small tree with brown wood and dark berries
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Ardisia paniculata include bush.

Ardisia paniculata (noun)	shrub (noun)
tropical American shrub or small tree with brown wood and dark berries	a low woody perennial plant usually having several major stems