Radyera farragei vs shrub

Radyera farragei and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Radyera farragei	Yes	No	No	No
shrub	Yes	No	No	No

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

Radyera farragei: southern and western Australian shrub with unlobed or shallowly lobed toothed leaves and purple flowers; sometimes placed in genus Hibiscus
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Radyera farragei include bush.

Radyera farragei (noun)	shrub (noun)
southern and western Australian shrub with unlobed or shallowly lobed toothed leaves and purple flowers; sometimes placed in genus Hibiscus	a low woody perennial plant usually having several major stems