Weigela florida vs shrub

Weigela florida and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Weigela florida	Yes	No	No	No
shrub	Yes	No	No	No

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

Weigela florida: deciduous shrub widely cultivated for its white or pink or red flowers
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Weigela florida include bush.

Weigela florida (noun)	shrub (noun)
deciduous shrub widely cultivated for its white or pink or red flowers	a low woody perennial plant usually having several major stems