needlebush vs needle bush

needlebush and needle bush both are nouns.

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

As nouns, needlebush and needle bush are synonyms defined as:

needlebush and needle bush: shrub with pungent rigid needle-shaped leaves and white flowers; eastern Australia

Other synonyms of needlebush include Hakea lissosperma, needle-bush.

needlebush (noun)	needle bush (noun)
shrub with pungent rigid needle-shaped leaves and white flowers; eastern Australia	shrub with pungent rigid needle-shaped leaves and white flowers; eastern Australia