Viminaria denudata vs shrub

Viminaria denudata and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Viminaria denudata	Yes	No	No	No
shrub	Yes	No	No	No

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

Viminaria denudata: Australian leafless shrub resembling broom and having small yellow flowers
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Viminaria denudata include bush.

Viminaria denudata (noun)	shrub (noun)
Australian leafless shrub resembling broom and having small yellow flowers	a low woody perennial plant usually having several major stems