Caesalpinia decapetala vs shrub

Caesalpinia decapetala and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Caesalpinia decapetala	Yes	No	No	No
shrub	Yes	No	No	No

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

Caesalpinia decapetala: spreading thorny shrub of tropical Asia bearing large erect racemes of red-marked yellow flowers
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Caesalpinia decapetala include bush.

Caesalpinia decapetala (noun)	shrub (noun)
spreading thorny shrub of tropical Asia bearing large erect racemes of red-marked yellow flowers	a low woody perennial plant usually having several major stems