needlebush vs shrub

needlebush and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
needlebush	Yes	No	No	No
shrub	Yes	No	No	No

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

needlebush: shrub with pungent rigid needle-shaped leaves and white flowers; eastern Australia
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of needlebush include bush.

needlebush (noun)	shrub (noun)
shrub with pungent rigid needle-shaped leaves and white flowers; eastern Australia	a low woody perennial plant usually having several major stems