Jacquinia armillaris vs shrub

Jacquinia armillaris and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Jacquinia armillaris	Yes	No	No	No
shrub	Yes	No	No	No

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

Jacquinia armillaris: small West Indian shrub or tree with hard glossy seeds patterned yellow and brown that are used to make bracelets
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Jacquinia armillaris include bush.

Jacquinia armillaris (noun)	shrub (noun)
small West Indian shrub or tree with hard glossy seeds patterned yellow and brown that are used to make bracelets	a low woody perennial plant usually having several major stems