Canella winterana vs shrub

Canella winterana and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Canella winterana	Yes	No	No	No
shrub	Yes	No	No	No

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

Canella winterana: large evergreen shrub or small tree having white aromatic bark and leathery leaves and small purple to red flowers in terminal cymes
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Canella winterana include bush.

Canella winterana (noun)	shrub (noun)
large evergreen shrub or small tree having white aromatic bark and leathery leaves and small purple to red flowers in terminal cymes	a low woody perennial plant usually having several major stems