Hakea leucoptera vs shrub

Hakea leucoptera and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hakea leucoptera	Yes	No	No	No
shrub	Yes	No	No	No

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

Hakea leucoptera: large bushy shrub with pungent pointed leaves and creamy white flowers; central and eastern Australia
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Hakea leucoptera include bush.

Hakea leucoptera (noun)	shrub (noun)
large bushy shrub with pungent pointed leaves and creamy white flowers; central and eastern Australia	a low woody perennial plant usually having several major stems