Colutea arborescens vs shrub

Colutea arborescens and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Colutea arborescens	Yes	No	No	No
shrub	Yes	No	No	No

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

Colutea arborescens: yellow-flowered European shrub cultivated for its succession of yellow flowers and very inflated bladdery pods and as a source of wildlife food
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Colutea arborescens include bush.

Colutea arborescens (noun)	shrub (noun)
yellow-flowered European shrub cultivated for its succession of yellow flowers and very inflated bladdery pods and as a source of wildlife food	a low woody perennial plant usually having several major stems