Sparmannia africana vs shrub

Sparmannia africana and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sparmannia africana	Yes	No	No	No
shrub	Yes	No	No	No

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

Sparmannia africana: large shrub of South Africa having many conspicuously hairy branches with large hairy leaves and clusters of conspicuous white flowers
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Sparmannia africana include bush.

Sparmannia africana (noun)	shrub (noun)
large shrub of South Africa having many conspicuously hairy branches with large hairy leaves and clusters of conspicuous white flowers	a low woody perennial plant usually having several major stems