Cyrilla racemiflora vs shrub

Cyrilla racemiflora and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cyrilla racemiflora	Yes	No	No	No
shrub	Yes	No	No	No

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

Cyrilla racemiflora: shrub or small tree of southeastern United States to West Indies and Brazil; grown for the slender racemes of white flowers and orange and crimson foliage
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Cyrilla racemiflora include bush.

Cyrilla racemiflora (noun)	shrub (noun)
shrub or small tree of southeastern United States to West Indies and Brazil; grown for the slender racemes of white flowers and orange and crimson foliage	a low woody perennial plant usually having several major stems