Aspalathus linearis vs shrub

Aspalathus linearis and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Aspalathus linearis	Yes	No	No	No
shrub	Yes	No	No	No

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

Aspalathus linearis: South African shrub having flat acuminate leaves and yellow flowers; leaves are aromatic when dried and used to make an herbal tea
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Aspalathus linearis include bush.

Aspalathus linearis (noun)	shrub (noun)
South African shrub having flat acuminate leaves and yellow flowers; leaves are aromatic when dried and used to make an herbal tea	a low woody perennial plant usually having several major stems