needle bush vs shrub

needle bush and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
needle bush	Yes	No	No	No
shrub	Yes	No	No	No

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

needle bush: 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 needle bush include bush.

needle bush (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