Canella-alba vs shrub

Canella-alba and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Canella-alba	Yes	No	No	No
shrub	Yes	No	No	No

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

Canella-alba: 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-alba include bush.

Canella-alba (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