honey-flower vs shrub

honey-flower and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
honey-flower	Yes	No	No	No
shrub	Yes	No	No	No

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

honey-flower: erect bushy shrub of eastern Australia having terminal clusters of red flowers yielding much nectar
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of honey-flower include bush.

honey-flower (noun)	shrub (noun)
Australian shrub whose flowers yield honey copiously	a low woody perennial plant usually having several major stems
erect bushy shrub of eastern Australia having terminal clusters of red flowers yielding much nectar