Hermannia verticillata vs shrub

Hermannia verticillata and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hermannia verticillata	Yes	No	No	No
shrub	Yes	No	No	No

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

Hermannia verticillata: African shrub having decumbent stems and slender yellow honey-scented flowers either solitary or in pairs
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Hermannia verticillata include bush.

Hermannia verticillata (noun)	shrub (noun)
African shrub having decumbent stems and slender yellow honey-scented flowers either solitary or in pairs	a low woody perennial plant usually having several major stems